Also did SP2 cause this?
--
Thanks
Dave
HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeWEB\OWA
Key: KnownContentTypes
Added a value for "application/pdf".
Restarted the System Attendant service. Now it's not being sent as an
octet-stream to my OWA users.
Hopefully, if anything, this'll send you down the right path.