Windows Explorer has encountered a problem and needs to close

[ehwr2009]

Hi,
I get this message each time I log on if I left folders open last time I
logged off.
The problem has been intermittent until today, when I can not open any
folders with explorer. When I tried to debug the problem I got the message
'Dr Watson Postmortem Debugger has encountered a problem and needs to close".
Any ideas?

My Windows is Version 5.1 (Build 2600.xpsp_sp3_gdr.090206-1234 : Service
Pack 3)

 

[Leonard Grey]

Your question is short on details. Do you have any clues about what
might have caused this problem? Does Event Viewer show any information
about the problem? Without further direction from you, all anyone can
offer - besides a lucky guess - is standard troubleshooting techniques,
the first of which is: Check for malware.