A new report surfacing today suggests that a number of early OS X Lion users are experiencing an issue with their Macs freezing after waking from sleep. The issue seems mainly to be affecting new 2011 iMacs, though a few MacBook Pro users have reported the same concern.
The issue has received extensive attention on Apple’s discussion forum, and so far the only solution to recovering from the freeze-up is to forcibly restart your Mac. A second issue details complaints of Lion freezing at the login screen, whereas a third issue describes Lion randomly freezing when beginning to play videos.
The issue is suspected to be related to the graphics processing of Lion (likely a driver problem). The issue appears to persist regardless of which version of Flash Player a user has installed, and regardless of the type of video being viewed. No official solution has yet been offered, and Apple has so far failed to comment on the issue.