Gosh Stilly - I get about an upgrade per week on the automated system. They pop up, I check to see what they're about and usually let them install, and they never seem to cause a problem.

Of course, back before I automated and my system got hopelessly out of date, there were a few glitches...

Most of them - if your system is already current - are comparable to getting a new signature file from your AV, although they may require a reboot (one in 3 or 4 updates?).

Scrambled icons used to give me fits until I figured out that you can rename them to include an icon number. Then autoarrange-alpha puts everything back pretty easily.

John