Here's a good article on how to fix high svchost.exe CPU usage - http://www.fileinspect.com/fileinfo/svchost-exe/. It's quite long, so can't post ll of it here. Hope this helps.

There's a website www.fileinspect.com (http://www.fileinspect.com) where you can research Windows processes.

For Vista and 7 users: found a very useful free sidebar gadget. It shows the most resource-heavy processes in real time. Can be downloaded here (http://www.fileinspect.com/sidebar-gadget/).

You can go and check running Windows processes on www.fileinpsect.com (http://www.fileinspect.com) to get some idea.

I found that AVG slowed down my computer (XP) a great deal. When I switched to Avira, the problem was gone.

I think your computer might be infected. Good anti-virus programs are Avira and avast.
Also check your running processes at www.fileinspect.com (http://www.fileinpsect.com)

Might be a Windows Explorer problem. Check out this article (http://www.fileinspect.com/fileinfo/explorer-exe/) - maybe you will find a fix there.

Avira, avast, AVG. Whichever you like best. I prefer Avira. Also AdAware and Malwarebytes to get rid of spyware and adware.

From Auslogics Blog
1) http://www.auslogics.com/en/blog/2009/02/windows-7-tips-and-tweaks/
2) http://www.auslogics.com/en/blog/2009/03/windows-7-performance-tweaks/
3)...

I found that AVG slowed down my system, so I switched to Avira. Try downloading Malwarebytes and run a scan. Also have you cleaned and defragged your hard drive? If not, do that (and browser cache...

Sometimes lsass.exe is a trojan. Read this article (http://www.auslogics.com/en/blog/2009/04/inspect-windows-processes/)

Good free anti-viruses are Avira personal edition (www.freeav.com) and avast! I prefer Avira because it's lighted on resources.

Sounds like Vista superfetch to me. Or maybe it's some malware - you can run a scan with malwarebytes and/or adaware.
Also you can try to speed up Vista startup and shutdown using the tips here ...

There's a good blog with speed up and optimization articles: http://www.auslogics.com/en/blog

Anti-virus: Avira Personal
Audio editor: Audacity
Defragmenter: Auslogics Disk Defrag
Email: Thunderbird
All-in-one utility: BoostSpeed

Hi all! I've read about BoostSpeed on CNet. It sounds all good and it supports 64bit, but I'm kinda careful about all that optimization software. So, has anyone tried it? I'm particularly interested...