iMac has become Sluggish after OSX.6

J

jasfa131

The Lone Deranger
After installing Mac OS X Snow Leopard, my iMac was initially FASTER than before. Programs loaded faster, large PDF files rendered quicker. However, in the last few weeks I've been noticing some MAJOR slow downs. My iMac had NEVER been this slow with Tiger or Leopard. This happens no matter how many programs I have open at once.

-Switching between programs freezes the dock and windows resulting in beach ball

-Youtube videos load 3-4 times slower

-Switching tabs in Safari or even TYPING leads to freezing/delays. (ie. I can type a full website in the address bar and it will appear 10 seconds later)

That's about it
I have the iMac listed in my signature (1GB RAM, 30GB free on the HD, 2.0 Core 2 Duo).


Any help is appreciated
 
Is your iMac still slow after a restart?
Have you tried leaving Activity Monitor open, so you can watch what processes are possibly contributing to slow-downs (something taking large amounts of processor use?)
Have you considered upgrading your RAM memory? Doubling to 2 GB may be a big help, too.
 
Yes, it's still slow after a restart. AH, right when I load a YouTube video, the "Flash Player (Safari Internet Plug-in)" begins taking 40% CPU.

UPDATE: I just updated Adobe Flash Player, and while playing an HD YouTube video, it began using 100.9% CPU.
 
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Yep - HD youtube vids are rough on processor use...
Have you considered adding more RAM memory?
'twill make a noticeable difference in performance by doubling the 1 GB that you have now, especially with Snow Leopard.
 
I think you'll find that you'll need two 1GB ram sticks,
You probably have two 512mb sticks in there now, this can be verified in System Profiler, which you'll need to replace.
 
If they're really dirt cheap, it'll be convenient to get 2 x 1GB cards. And yes, I currently have 2 x 512MB cards.
 
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