The Mac OS X 10.5.5 update is working fine on my Intel 3.06 GHz 24" iMac. I've noticed no problems so far. I did run into an unusual item when I repaired permissions, though. I got the following 2 alerts (which I have never seem before, and which didn't show up when I repaired permissions just before the update): Warning: SUID file "usr/bin/lppasswd" has been modified and will not be repaired. Warning: SUID file "System/Library/CoreServices/Finder.app/Contents/Resources/OwnerGroupTool" has been modified and will not be repaired. Does anyone know what this is all about? Thanks in advance.