Not on the Radar

Radar is Apple's bug tracking system, but you have to be a paid member of ADC to access it, and I haven't made that plunge.. yet. If I did, I could report this error which is consistently reproducible, updating Camino from a disk image as a non-admin user: first the update fails to request my credentials to authenticate the update (the copy fails) then as a bonus the existing version fails to run until the copy failure sheet is dismissed.

Edit: seems to be fixed in 10.5.1