Login Prompted when attaching file in OWA from Safari

I am running a fully updated Exchange 2003 server and OWA prompts for a password when attaching a file when connecting from Safari on a Mac.  If using IE, it works just fine.  I have reset the Virtual Directories as described in: http://support.microsoft.com/kb/883380/en-us.  I receive a "Timer_ConnectionIdle" error in the IIS log files on the server when trying to attach the file.  We have not noticed any other issues.  Outlook (setup as rpc/http), Entourage, Windows Mobile Active Sync and OWA from IE are all working without any noticable issues.
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Does this happen with Firefox too?
jesseczAuthor Commented:
It works fine in Firefox, but still prompts for password when clicking the attach button using Safari 3.0.  
I wonder if the cookie settings are the problem in Safari? You might try playing with them. If it were me, I would suggest the users switch to Firefox. I have always found Safari a bit buggy.

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