I'm using Sublime Text 2.0.1 (Build 2217) on Linux Mint 14, and I've noticed something strange (and frustrating).
When using multiple cursors, pressing the space bar to insert a space causes each cursor to move. The first cursor does not move, the second cursor moves back one character, the third moves back two, and so on. This occurs before the spaces are inserted, so the spaces are inserted at positions different to where the cursors were. This does not seem to occur for inserting any other character, or for pasting text (even spaces).
I've not seen this on windows, and I use that version more often, so I'd assume this is a Linux specific issue?