Upgraded to Leopard. Painful. Ukelele fails to make a new layout, Xjournal crashes upon login, Firefox displays question marks instead of Cyrillic in the input fields, Adium shows garbage, Software Update fails to connect — and these were just the first random apps I launched, so it looks like much fun in the next few weeks. Frankly, I didn't expect that from Apple.
Ah well, at least I can configure the whole thing from scratch. It takes some time but always brings up some cool stuff (it's GimmeSomeTune for me today).