With the latest experimental build: http://bit.ly/qimSpD
I'm having some trouble with HDR bracketing + the 2 second timer. If I set it to any of the bracketing settings (9 shot, 1 stop apart; 3 shot, .5 apart; 7 shot, 1 stop apart; and so on) it will take the first set correctly. However, after that, sometimes when pressing the shutter it will only take a single picture. It's sort of random, it will do the correct bracket about 1 time out of three.
Before this build, it acted the same way. I thought it had something to do with the 2 second timer issue, but it did not.
note: I'm not sure which version, 0.1.6? You can change it to which ever is best.