my cpu is occasionally taken over by dllhost.exe and the
system slows way down. what does this program do, and why
all of sudden is it acting up? Is there a virus or worm
that has corrupted it? how do I fix it?

Update your virus definitions and then run a full system scan.

W32.Welchia Trojan
http://securityresponse.symantec.com...chia.worm.html
--
HTH...Please post back to this thread

~Robear Dyer (aka PA Bear)
MS MVP-Windows (IE/OE), AH-VSOP

Protect Your PC
http://www.microsoft.com/security/protect/default.asp

scott wrote:
>> my cpu is occasionally taken over by dllhost.exe and the
>> system slows way down. what does this program do, and why
>> all of sudden is it acting up? Is there a virus or worm
>> that has corrupted it? how do I fix it?

dllhost.exe is not a virus. dllhost32.exe is. dllhost.exe
is a DCOM surrogate. Have fun.

Its presence may indeed be caused by a Trojan. See "Technical Details"
section of
http://securityresponse.symantec.com...chia.worm.html.
--
HTH...Please post back to this thread

~Robear Dyer (aka PA Bear)
MS MVP-Windows (IE/OE), AH-VSOP

Protect Your PC
http://www.microsoft.com/security/protect/default.asp

The Unknown P wrote:
>> dllhost.exe is not a virus. dllhost32.exe is. dllhost.exe
>> is a DCOM surrogate. Have fun.

Hi!Scott!
The DCOM DLL Host process supports DLL based COM objects and is used by
many Windows programs.
But I shall suggest you to scan your system with latest virus
definitioned antivirus.
Re:-
http://securityresponse.symantec.com...chia.worm.html
regards.
ssg MS-MVP
pronetworks.org

scott wrote:

> my cpu is occasionally taken over by dllhost.exe and the
> system slows way down. what does this program do, and why
> all of sudden is it acting up? Is there a virus or worm
> that has corrupted it? how do I fix it?