A kernel built with the patch from https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/84485 allows the use of the 'airprime' drive instead of usbserial & works quite well.
-- usbserial doesn't recognize device (2.6.17) (worked in Dapper) https://launchpad.net/bugs/84152 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs