OE6 has been updated with service pack one to get you attachments back you need to do the following :-
Turn off the Option to Use the Unsafe File List
To turn off the Do not allow attachments to be saved or opened that could potentially be a virus option:
Start Outlook Express.
On the Tools menu, click Options.
Click the Security tab, click to clear the Do not allow attachments to be saved or opened that could potentially be a virus check box under Virus Protection, and then click OK.
this does work and in most cases if you still have the emails it will bring back the attachments i do say in most cases but not all