There is a fix to be found online
, but you need the combo update available.
Ironically, despite the fact so many real Mac users are having a problems, the combo update took ages to install (over 30 mins) on my Hackintosh server, but it worked wonders. In particular, it solved all the SMB authentication, sharing and copying issues I was having that made Lion essentially unuseable as a media server for my Windows Media Center box (I reverted to 10.6 on a different partition in the interim). It even boots faster!
The original 32 bit junkie now snorting pure 64. Sky Broadband, Wired, Wireless, VoIP, 2 Macs, 2.5 Hackintoshes, 3.5 PCs, iPhone, OS X, Windows XP, Windows 7, Ubuntu.
Rehab is for quitters