Hmmm... this is the first I've seen of such reports.
The first thing I would do is run Disk Utility and "Repair Disk Permissions."
The second thing would be to check the "rwx" permissions on the .app file.
These do seem to be getting reset after Updates lately.
for information on changing permissions.
Bill Magill - Mac Player - Old Timers Guild- Gladden:
Valamar: Dwarf Hunter - Level 100
Valdicta: Dwarf Rune-keeper - Level 100
Valanne: Beorning - Level 80