I found it on microsoft.public.msn.messenger posted as an answer to identical problem like yours.
How good it is .... don't know
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1. The date on your computer needs to be set properly --
double click the clock verify that
the time and date are set.
2. Check your IE Security settings -- open Internet
Explorer, click the TOOLS menu, then
INTERNET OPTIONS, then click the ADVANCED tab, scroll to
the Security section, and verify that "Check for server
certificate revocation" is UNCHECKED(if it's CHECKED then
UNCHECK IT). Also verify that 'Use SSL 2.0' and Use SSL
3.0' are CHECKED(if there UNCHECKED then CHECK them) then
click OK.
3. Click Start, then Run, and enter the following:
regsvr32 softpub.dll
(don't forget the "SPACE" between regsvr32 and softpub.dll)
then click OK
also clear ur HISTORY and TEMP internet files
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or as guys said.... Bill is messing with you, and it will go away on its own in a few days