Never seen or heard of anything like that happening before ...
Google turned up a few results though ...
Google search, keywords I used
Potentially helpfull
"Try this. Close any Windows Explorer. Use regedit.exe. Go to
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\Explorer
Backup the key and then delete the value ITBarLayout. The system should
generate a new ITBarLayout for you automatically. Hope this works."
Potentially Helpfull
"We have a win2k user whose explorer.exe is missing the top pull-down menu bar
(File, Edit,... Help). A search on google (below) found a person with the same
problem, but we are in the same boat as they are: all the suggestions failed to
fix it:Alt-F or Alt-E, trying to hover the mouse over where menubar should be.
If I login as ascadmin the menubar is ok. Also tried turning off active
desktop, and other things, but still no menubar. Ideas?
Solution:
Windows 2000 and IE 5.5; I could fix it. Had to Repair the IE 5.5
(control panel/add remove software/Microsoft Internet Explorer change Remove
-> chose the repair option) which failed. Reason the files
browselc.dll and asctrls.ocx were missing. Did copy them from another
W2k installation (into c:\windows\system32). Closed all Explorer and
Internet applications. Afterwards I did rename the registry key
Toolbar to ToolbarOLD and did import the the
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\]
key from another W2k installation. (fix.reg)"