I've got Ubuntu 12.04 running on this Dell XPS 14 Ultrabook (L421X). Everything is working but my wireless transfer rates are low. I'm getting about 1MB/s download speed on the ultrabook vs 15MB/s on the E6500. If I move into the room with the access point the speed climbs to 15MB/s so I'm guessing it is a signal strength issue but wavemon shows comparable signals to those seen by the E6500. Are there any settings I can tweak in hopes of making it faster?