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My Windows 7 laptop of 1.5 years old seems to be leaking memory. After it boots and I log in and it reaches steady state, the memory consumed is usually about 1.5 GB. My laptop has 4 GB RAM. After steady state, I start outlook, chrome, Xemacs, acrobat reader, a few putty sessions. I notice that within 1 or 2 days, the memory consumption goes to 3+ GB. After it crosses 3 GB, chrome tabs start crashing and Chrome itself starts crashing. I even get a message from the OS saying to free up memory by closing applications. Overall, the system becomes slow and unstable and forcing me to reboot. Sometimes, I have observed that even after I have quit all the above applications, the Task Manager shows that the Memory consumed is at ~3 GB.

From the Task Manager (I also have pstools from microsoft) and was unable to figure out where all the memory is being consumed -- Kernel ?

This being 2012, I prefer not to reboot my laptop for 1-2 weeks at the minimum since shutting down and reboot takes a lot of time.

What can I do to figure out if this is a Virus issue or a genuine OS issue ?

Pagination file : I earlier had a 4 GB pagination file but have reduced it recently to 500 MB. The memory leak problem hasn't shown a difference irrespective of the pagination file size.

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closed as not constructive by Nifle, Randolph West, 8088, techie007, Diogo Aug 22 '12 at 12:21

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You leave that running for 3 days and you are surprised that you run out of memory? o.O Chrome and outlook are giant memory hoggers. –  Lucas Kauffman Aug 22 '12 at 6:26
they hog memory but they are NOT supposed to leak memory! –  anjanbacchu Aug 22 '12 at 6:35
Your page file should be system managed - setting it that low isn't going to help anything. Viruses don't do this - you're simply running low on memory, as you've established. Add more RAM to the machine if you're not willing to reboot (FWIW, my laptop takes under 30 seconds to reboot and Chrome remembers where it was). –  user3463 Aug 22 '12 at 6:48
@anjanbacchu I'm not convinced they leak memory. –  Lucas Kauffman Aug 22 '12 at 6:53
@Lucas Kauffman 3 Days ? The only time I ever reboot win7 is when a windows update have to reboot to apply. A win 7 is not supposed to run out of memory unless there is a bug, outlook is hovering at around 800Mb, and chrome releases its memory when you close a tab (chrome implements 1 tab = 1 process) - this has so far not caused any problem, even with 1 virtualbox VMs running on top. –  nos Aug 22 '12 at 7:36
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