I also have the same problem. I can only mount it using udisks and sudo mount. Either Data CD and DVD do not work (unless manually), haven't tried audio and video yet. I haven't tried it in 10.04 and older, because I'm already in 10.10 when I got this. I can't burn using Brasero, but GnomeBaker works fine (even without sudo). I could use it in VirtualBox 4.0, in Windows XP guests, also in Windows 7 installed in my computer. I also able to reinstall Ubuntu using this drive with the enclosure. The DVD drive also works fine if installed as internal.
Bus 001 Device 002: ID 05e3:0701 Genesys Logic, Inc. USB 2.0 IDE Adapter
[ 2.403026] scsi 2:0:0:0: CD-ROM HL-DT-ST DVDRAM GSA-H44L SB01 PQ: 0 ANSI: 0
[ 3.397475] sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
[ 3.397481] Uniform CD-ROM driver Revision: 3.20
[ 3.397778] sr 2:0:0:0: Attached scsi CD-ROM sr0
[ 3.399221] sr 2:0:0:0: Attached scsi generic sg2 type 5