Snow Leopard sluggish after upgrade from Leopard

"mds is Spotlight, indexing your data. It will take some time (though I heard it's faster in Snow Leopard than in earlier versions), but let it do its work, and once it's done, your Mac should be much faster again.

Also, .0 versions of OS X have had many problems, and 10.6.1 is likely to be available in a month (based on data) - it will likely contain several bug fixes that didn't make it to 10.6.0."

It's probably because Spotlight is indexing your files again. Wait a few hours and see if it's still sluggish.

"I once had to remove a snapz pro process on a friends machine (Leopard) which was causing all sorts of problems, try removing that and rebooting.

Your screenshots should have been sorted by CPU, not by Real Mem as you are not seeing much swapping and have lots of available menory (free+inactive)...

Safe mode is great for troubleshooting. Also try to remove all your startup items and 3rd party lauch daemons/agents:

Common Mac OS folders/settings to check (when trying to get rid of a pesky self-launching app)"

"Outrageously slow here, 2 or 3 minutes to run even the preferences. 2 minutes to delete a file. Very little CPU activity (after waiting 2 minutes to load activity monitor), very little virtual memory usage. Its like walking in Tar. Its on an upgrade installation, installing from scratch will take a full-time week as the machine is totally stocked, and finding the 3rd party application that is ""causing"" the slowdown is near impossible.

Luckily I carbon copied my previous build so I'll be popping the disk out and reverting and trying again in 3 months.

System is a 2.2MBP 4gigs ram, and a DualHead2Go to 2x 24""s

My dream of open CL and 64bit computing shattered, along with the jetpacks, hoverchairs and robots they promised us in the 60s."

"I had this exact experience when trying to do an upgrade to Leopard. The answer in that case was to backup any settings and data that I wanted to keep and then do a complete reinstallation of Leopard (that is, wipe the drive when you install - don't just upgrade in place).

Anecdotally, I've since heard from many people that this is common with significant Apple version bumps. They tell you that you can upgrade, but really you should reinstall. It takes longer, but it was worth it for me."