I also received and installed the update this morning. FAIL!
Upon reboot, the dreaded 'Low on space' warning immediately appeared. Nothing I've tried has cleared the warning.
Icons for some of the app shortcuts on my desktops (IP Cam Viewer, Dolphin Browser HD; USA Today, Vlingo, Pandora, Audible) are missing; the text for the shortcuts is still there, but the app icons are gone. The same (and many other) apps are missing from the "All apps" list, too. AppBrain App Market no longer lists them, either. However, Settings > Applications > Manage Applications lists many of these apps, but with obscure names (e.g., com.rcreations.ipcamviewer) and no logo. I can't *begin* to figure out how to resolve this!
My wireless credentials are lost; re-entering them isn't working.
And this within just the first 15 minutes!