2 Leopard GUI bugs ?

I have noticed a few interface bugs with Leopard and since that thread about "what's still broken" (after the 10.5.1 update) is stale now, I thought I would start another.

Bug 1 - *.dmg files automatically load on the desktop as usual but I have found many times (especially if I have a lot of things going on at the time), the drive image will never unmount from the desktop. You can right-click on it and select "Eject" til the virtual cows come home, but it will just stay there until the next reboot. This happens to me maybe ten or so times a week on average and rebooting each time is annoying at best.

Bug 2 - I sometimes manage permissions on a file from the GetInfo dialogue by clicking the lock on the file, authenticating, and then manually deleting a group or a user from the permissions list. When I am done I click the lock again so that the permissions are again locked, but the lock will never "close." This one happens 100% of the time, without fail. It seems as if it's just that the tiny lock graphic is not updating because if you close and then re-open the dialogue it has been re-locked.

Since these are both kind of resource related graphic update issues and I am on an older G4 I would be interested to know if I am the only one experiencing them or if they are actual bugs.