Errors related to instant XP system crash when closing Firefox?  About 1 week before Firefox update.  Crashes started after update...

Error:  XPCOM Event Receiver Application Error
The instruction at "0x04f552ei" referenced memory at "OxO4f92ea8".  The memory could not be "read".  Click OK to terminate program.

Error:  DDE Server Window:  PS.exe Application Error
The instruction at "0x23ob52e1" referenced memory at "Ox230e2ee8".  The memory could not be "read".  Click OK to terminate program.

Error:  Run a DLL as an Application  hotplug.dll
Dr. Watson Postmortem Debugger

Thanks all!