After upgrading from Ubuntu 9.10 to Ubuntu 10.04, the automounting of external USB drives to their label under the /media directory fails, they get mounted as /media/usb0 /media/usb1 etc. It previously worked.
I found simply uninstalling usbmount fixed it. Now they automount OK, as /media/label, where label is the disk or usbstick label.
It's these sorts of untested "improvements" that will discourage users of Ubuntu from upgrading. Unless there is a really good reason I'm going to stick to only the long term support versions from now on. I basically only have time to debug a new version every 2-3 years, not every 6 months!
Pity there's no way to freeze Thunderbird and Firefox at working versions, rather than always having experimental updates with new ideas.
Changing the minimise, maximize and close buttons on Ubuntu 10.04 to the wrong side by default was a classic arrogant Windows-like approach. It's sad Ubuntu has gone that "we know best for you" way now.