Even on buttons, often the text won't fit. The helpsystem as well seems to have problems with german, it says help files weren't found. Many applications unexpectedly quit on me, like QT Player, Mail, PDFViewer etc., but none of the chrashes was unrecoverable. Performance is still choppy, even with my dualprocessor G4. Window resize is the worst.
Dock is smooth, as is window dragging.
Loading applications takes much more time then in OS9. So even though Adaptec is not providing support for this card, it would appear that Apple is. BTW, I can't boot OS X from the 2940, but I expected that because for whatever reason I can't boot MacOS or Linux from it either. I welcome other reports from OS X Beta users on retail SCSI card support. Reply if you want details.