You may have a damaged identity especially if it is the default Main
Identity. File | Identity | Add New Identity. Create a new one and test it.
If all is well, you can import your messages and Address Book from the old
identity and delete it.

How to Create and Use Identities in Outlook Express
http://support.microsoft.com/?kbid=209169
--
Bruce Hagen
MS-MVP Outlook Express
~IB-CA~

"Earl Partridge" wrote in message
ink.net...
Windows 98, Outlook Express 6.

With Preview Pane disabled, double clicking the subject of a message in
the
inbox... the message does not open. The subject does appear in the task
bar,
but can not be opened from there either.

The message text can be viewed/read with Preview Pane enabled.