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Well I was a user of Windows Vista and I was so bugged by it that I finally chose to "upgrade" to Windows XP again...
The problems I faced with Vista was the same as my fellow comrades faced primarily being to slow or sluggish, program incompatibility to name a few... I decide to cut this short because you will find heaps of shortcomings on the internet and elsewhere...
While Vista was lumbering Windows 7 is a pleasant surprise... I couldn't imagine in my most serenest of dreams that the shortcomings of Vista would be addressed promtly in 7.

I wonder how the team working on 7 do such a wonderful job on the OS that its lightening fast compared to Vista on a decent system...What issues did they address and why couldn't the same have been done in Vista where they faced heavy criticism.

Could the enlightened ones list down what has been done to 7 vis a vis Vista....

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3 Answers 3

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The wikipedia link is nice, but here's my "cursory" version from what I've experienced since downloading the RC a while back:

Less bloat: They took out a lot of the Outlook Express type stuff to help slim down the install footprint. This has also increased the performance a bit, which is nice. I originally installed Windows 7 on a laptop that was "handling" Vista, but the system really took off performance-wise after Win7 went on.

Enhanced existing features: UAC has been improved significantly so you're not getting prompted for every other action. Calculator and Paint have a fresh look and feel, plus a few new features. I think Jeff was so pleased that they treated these apps as first class citizens that he blogged about it.

I believe there are even more enhancements to the Start Menu, especially the search built into the start menu so that you can hit your window key, type in the first few letters of an application or file you're looking for, and hit enter to get working on it. This came out in Vista and I love it.

Upgraded TaskBar: The quick launch and task bar have effectively merged. Instead of a full title of the app, you see an icon, multiple instances of the app are "stacked" by default, though you can change that in the settings to show a number. The quick preview is even better now because you can mouse over the icon, see the multiple instances, and even close one of the instances right from there.

They've also created a "recent documents" type feature for each application, so you can right click the icon and have a list of recent files you've worked with (try this out with Paint.NET). Granted the application authors have to leverage the library, but it is really slick.

It reminds me a lot of RocketDock, but with some advanced contextual issues merged into it.

Contextual Help: In addition to applications that show up in the search bar when you press the start button, you also get contextual type help. For instance, hit the window key and type in "Power" and you'll see options for managing your power settings or what the power button does. Again I believe this is a refinement of what Vista had started to do.

There's plenty more items, but I think these four stick out the most in my mind.

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As far as the Taskbar, don't forget that applications now have Jump Lists as well (where supported), where you can effectively tell an application to do something before ever opening it. –  Will Eddins Oct 8 '09 at 17:26
    
Forgot about that! Great stuff there too! –  Dillie-O Oct 8 '09 at 17:35

from WSJ article: Here are some of the key features of Windows 7.

New Taskbar: In Windows 7, the familiar taskbar has been reinvented and made taller. Instead of mainly being a place where icons of open windows temporarily appear, it now is a place where you can permanently "pin" the icons of frequently used programs anywhere along its length, and in any arrangement you choose. This is a concept borrowed from Apple's similar feature, the Dock. But Windows 7 takes the concept further.

For each running program, hovering over its taskbar icon pops up a small preview screen showing a mini-view of that program. This preview idea was in Vista. But, in Windows 7, it has been expanded in several ways. Now, every open window in that program is included separately in the preview. If you mouse over a window in the preview screen, it appears at full size on your desktop and all other windows on the desktop become transparent—part of a feature called Aero Peek. Click on the window and it comes up, ready for use. You can even close windows from these previews, or play media in them.

I found this feature more natural and versatile than a similar feature in Snow Leopard called Dock Expose.

You can also use Aero Peek at any time to see your empty desktop, with open windows reduced to virtual panes of glass. To do this, you just hover over a small rectangle at the right edge of the taskbar.

Taskbar icons also provide Jump Lists—pop-up menus listing frequent actions or recent files used.

Desktop organization: A feature called Snap allows you to expand windows to full-screen size by just dragging them to the top of the screen, or to half-screen size by dragging them to the left or right edges of the screen. Another called Shake allows you to make all other windows but the one you're working on disappear by simply grabbing its title bar with the mouse and shaking it several times.

File organization: In Windows Explorer, the left-hand column now includes a feature called Libraries. Each library—Documents, Music, Pictures and Videos—consolidates all files of those types regardless of which folder, or even which hard disk, they live in.

Networking: Windows 7 still isn't quite as natural at networking as I find the Mac to be, but it's better than Vista. For instance, now you can see all available wireless networks by just clicking on an icon in the taskbar. A new feature called HomeGroups is supposed to let you share files more easily among Windows 7 PCs on your home network. In my tests, it worked, but not consistently, and it required typing in long, arcane passwords.

Touch: Some of the same kinds of multitouch gestures made popular on the iPhone are now built into Windows 7. But these features won't likely become popular for a while because to get the most out of them, a computer needs a special type of touch screen that goes beyond most of the ones existing now. I tested this on one such laptop, a Lenovo, and was able to move windows around, to resize and flip through photos, and more.

Speed: In my tests, on every machine, Windows 7 ran swiftly and with far fewer of the delays typical in running Vista. All the laptops I tested resumed from sleep quickly and properly, unlike in Vista. Start-up and restart times were also improved. I chose six Windows 7 laptops from different makers to compare with a new MacBook Pro laptop. The Mac still started and restarted faster than most of the Windows 7 PCs. But the speed gap has narrowed considerably, and one of the Lenovos beat the Mac in restart time.

Nagging: In the name of security, Vista put up nagging warnings about a wide variety of tasks, driving people crazy. In Windows 7, you can now set this system so it nags you only when things are happening that you consider really worth the nag. Also, Microsoft has consolidated most of the alerts from the lower-right system tray into one icon, and they seemed less frequent.

Compatibility: I tried a wide variety of third-party software and all worked fine on every Windows 7 machine. These included Mozilla Firefox; Adobe Reader; Google's Picasa and Chrome; and Apple's iTunes and Safari.

I also tested several hardware devices, and, unlike Vista, Windows 7 handled all but one smoothly. These included a networked H-P printer, a Canon camera, an iPod nano, and at least five external flash drives and hard disks. The one failure was a Verizon USB cellular modem. Microsoft says you don't need external software to run these, but I found it was necessary, and even then had to use a trick I found on the Web to get it to work.

System Requirements: Nearly all Vista PCs, and newer or beefier XP machines, should be able to run Windows 7 fine. Even the netbooks I tested ran it speedily, especially with the Starter Edition, which lacks some of the powerful graphics effects in the operating system. (Other netbooks will be able to run other editions.)

If you have a standard PC, called a 32-bit PC, you'll need at least one gigabyte of memory, 16 gigabytes of free hard-disk space and a graphics system that can support Microsoft technologies called "DirectX 9 with WDDM 1.0." You'll also need a processor with a speed of at least one gigahertz. If you have a newer-style 64-bit PC, which can use more memory, you'll need at least two gigabytes of memory and 20 gigabytes of free hard disk space. In either case, you should double the minimum memory specification.

View Full Image PTECHjp Microsoft

Aero Peek lets you see your desktop by making your windows transparent. PTECHjp PTECHjp

Installation, editions and price: There are four editions of Windows 7 of interest to consumers. One, a limited version called Starter, comes pre-loaded on netbooks. A second, called Business, is mainly for people who need to tap remotely into company networks (check with your company to see if you need this). A third, called Ultimate, is mainly for techies who want every feature of all other editions. Most average consumers will want Home Premium, which costs $120 for upgrades.

The system for upgrading is complicated, but Vista owners can upgrade to the exactly comparable edition of Windows 7 while keeping all files, settings and programs in place.

Unfortunately, XP owners, the biggest body of Windows users, won't be able to do that. They'll have to wipe out their hard disks after backing up their files elsewhere, then install Windows 7, then restore their personal files, then re-install all their programs from the original CDs or downloaded installer files. Then, they have to install all the patches and upgrades to those programs from over the years.

Microsoft includes an Easy Transfer wizard to help with this, but it moves only personal files, not programs. This painful XP upgrade process is one of the worst things about Windows 7 and will likely drive many XP owners to either stick with what they've got or wait and buy a new one.

In my tests, both types of installations went OK, though the latter could take a long time.

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Check out the Engineering Windows 7 blog, where they explain in detail what they have done to improve the operating system and how they did it.

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I meant to say that if MS has done such a fantastic job of 7 why was Vista such a failure? –  Kevin Boyd Oct 8 '09 at 16:24
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Well, that's the age old question there. Some folks think Win7 is a great new OS, some folks consider it Vista SP3, which finally resolved the performance and security (read UAC) issues and added a few fancy updates (like the taskbar) in the process. –  Dillie-O Oct 8 '09 at 16:35
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I have seen a conclusion in a Norwegian article: Windows 7 is what Vista should have been... –  awe Oct 9 '09 at 11:09

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