Remove ubuntu mention

darcs-hash:20100409120925-58252-37897634a29d9b7fc729a848db551fef161b2c0d
Raised version

Ignore-this: f6fcad204b99d56bfecd039ffda02bd9

darcs-hash:20100409135319-56b4d-f86e35fabedeb5489126e8774f36d18cfc3f9e7f