Recently updated Knowledge Base articles from Apple
iChat requirements, what to do if you can't log in after upgrading to Leopard
Here are some recently modified Knowledge Base articles from Apple.
iChat system requirements Provides tables of requirements for audio and video conferencing, 1-to-1 and 4-way, and the various video qualities you can expect depending on your bandwidth and hardware, along with features such as Photobooth Effects, Backdrop effects, Screen Sharing, AV Recording, and iChat Theater. The take-home message: Just because you saw Steve do it in the keynote doesn't mean you can do it. (Hmm, this could explain why I couldn't get "side-by-side" view to work.)
Time Machine not changing backup destination when requested This is evidently a known minor bug, but the workaround is simply to log out and log back in.
Problems logging in, administrator user changing to standard user There are several interrelated articles here. Three deal with what to do if, after upgrading to Leopard, you can't log in to an already existing account to which no password was ever assigned (not a recommended situation, apparently); if, after upgrading to Leopard, your existing password is rejected; or if, after upgrading to Leopard, your recent iMac stalls at the blue screen or login window.
There is also an article on what to do if your administrator account reverts to a normal, non-admin account. It's never a good idea for the computer to have no admin account; you don't have to log in as admin all the time (and some people work most of the time in a non-admin account, though they do need to know the admin name and password for installing software and similar). Apple says that this can be fixed by logging in as root and setting up the account as admin again.
A note on this second issue comes from a reader, who informs us that just because you have not been hit by this problem, that doesn't mean you won't be. He says he used Leopard for two weeks and then all of a sudden found that his admin account had been changed to a standard account. He then restored from the Time Machine backup and all was well for about a day, whereupon the admin account again changed to a standard account. This is surprising news and one wonders what could be lurking under the hood that could trigger such a change after such a delay.
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