Spotlight in Snow Leopard was instantaneous but has gotten slow, I've tried reindexing

Question

When I first started using Snow Leopard, I used spotlight to launch programs. I would type cmd-space and the first few letters of the program (chr to launch Google Chrome, for example).

This worked great for about a week -- the first result was always the application, and results turned up instantaneously.

Since then Spotlight has gotten progressively slower, to the point that now, if I type "illus" to launch Adobe Illustrator, it takes more than 10 seconds (a loonnng time) to find the Illustrator application. This even though I use it all the time and it's in the recent programs list.

Does anyone know why Spotlight is so slow to find a file near the top of the disk hierarchy that's in frequent use?

I have tried adding and removing various disks etc. from the privacy pane of the Spotlight system settings. Even when I put every disk and folder in the "prevent" list except applications, Spotlight is agonizingly slow.

I also tried deleting the spotlight preferences in the preferences folder, and disabled all the "mdimporter" files that were in /Library/Spotlight:

AppleWorks
GBSpotlightImporter
iWork
LogicPro
Microsoft Office

Nothing helped.

Answer 1

The best solution I've found so far is to periodically remove the applications folder from Spotlight using the privacy pane of the System Preferences. After adding it back, Spotlight speeds up quite a bit.

Answer 2

I found a better way to launch programs quickly in Snow Leopard than using Spotlight (which turned out to be too slow).

1. change the keyboard shortcut for Spotlight (cmd-space) to activate the dock.

2. group your dock icons alphabetically, but by frequency of use within each letter. For example, I use Adobe Photoshop more than Adobe Illustrator so I put Photoshop before Illustrator in the Dock.

Programs beginning with F should go right after the Finder.

Now, I can launch any program by typing command-space then the first letter of the program (and a down arrow or two if necessary).

It's instant, whereas using Spotlight to launch programs meant a 2-3 second wait each time.