Check for parasites. If not the issue, then please post the exact and
complete error message.
This may be caused by a third-party program (adware, spyware, parasite).
Get AdAware and Spybot and run them both. Keep them up to date.
Dealing with Unwanted Spyware, Parasites, Toolbars and Search Engines http://mvps.org/winhelp2002/unwanted.htm
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