Yea this blows... looks like I'm stuck with the laggy server connection... Probably going to just let it finish overnight at this point...
Anyways, HERE'S what my issues with 394 are, and they're ALL related to Exchange 2007 support:
Address Book.app previously did not allow you to add photos to Exchange contacts, while this is a readily available feature for Exchange on both the iPhone and in Outlook on PCs... (adding the photo to a contact on the iPhone will actually push the photo over to Address Book.app... so that's my workaround...)
iChat.app has a major flaw in its interaction with Exchange contacts as well. If you attempt to assign anyone on your buddy list to an Exchange contact through iChat, the app will completely freeze up with the spinning wheel, and either crash completely or you'll need to force-quit ONLY if you search through these Exchange contacts with the indexed "Spotlight" searchbar at the top of the list within the iChat settings... If you simply scroll through the exchange contacts and select the contact manually without using the searchbar, everything's fine...
iCal.app ALSO has some trouble with Exchange. You can set up events just fine through iCal, and these events will push to the server instantly and that's all good... but if ANY of these events have recurrence set up, they will simply DISAPPEAR from iCal completely... Upon further investigation it seems that these recurring events STILL exist on the exchange server (and all other devices connected to it), but they seem to be invisible to iCal.
And the final Exchange issue is with Mail, iCal, and Address Book together... Server updates do NOT seem to be "pushed" to Snow Leopard - all three applications require any updates to contacts, calendars, or emails to be "fetched" at whatever interval you choose in the app's preferences... I don't know if this is due to an ActiveSync licensing issue (doesn't seem to make any sense considering the iPhone is licensed with ActiveSync... so why would Apple not bother doing the same for Snow Leopard?) or simply a bug... But in any case, it's not normal behavior for an Exchange 2007 client.
Aside from these issues I don't believe I had any other problems... OH - XLD (X Lossless Decoder) Audio conversion software does not encode properly in Snow Leopard... all audio files encoded with it are completely silent for the duration of the track.
I REALLY hope this 402 update has some fixes for the Exchange support... It's the main reason I upgraded to SL - (Entourage is awful)...
-After all that typing... I appear to have downloaded only 100MB... stupid Apple Server >: (