Does it loose its strength after roughly the same time frame or is it random?
Can you download
HijackThis!
Before using HijackThis Please Do the Following
[*]Make sure that HijackThis is installed in
it's own folder
Show hidden files and folders:
For XP:
1.On the Tools menu in Windows Explorer, click Folder Options.
2.Click the View tab.
3.Under Hidden files and folders, click Show hidden files and folders.
4.If you see a warning message, click Yes.
5.Click Apply.
6.Click OK.
For 98/2000/ME:
1.double-click the My Computer icon
2.Click on the View menu, click Folder Options
3.Advanced Settings box, under the "Hidden files" folder, click Show all files.
4.If you see a warning message, click Yes.
5.Click Apply.
6.Click OK.
Then could you run the program and post the log onto the forum for us tp take a look at.