Hey there stranger, the Borderlands patch that will let you get to level 69 is now LIVE, get you one!!

Here’s the skinny from Gearbox

11/02/2010: Borderlands Update 1.41 is now available for PC!

• Level cap increase of 8 levels for all players.
  - Original Borderlands players will now be able to achieve level 58.
  - Owners of The Secret Armory of General Knoxx can achieve a record setting increase to a maximum level of 69.
• Enemies now scale to new level caps throughout the whole game as long as playthrough 2 has been completed.
• Item drops (with the exception of COM Decks) will now scale to new enemy level caps.

DLC4 Achievement/Trophy glitches that have affected some users will now properly award players for obtaining these achievements.