Hydrogen and Audacity don't mix

Hey everyone, I'm sort of new to the whole computer recording thing but I recently decided that I want to record some songs with drums, bass, guitar and (hopefully, if i think i'm good enough) vocals. I managed to program an entire song on drums using the Hydrogen drum machine program, however when I try to record it using audacity, I keep getting these seemingly random moments where the recording kind of skips, for example: if I were to have a bass drum hitting quarter notes in 4/4 time:

1 2 3 4

the recording makes it sound like this:

1 2 4

completely skipping a beat and ruining the track. I would say that this happens at least 3 times in 6 minutes. I have it so Audacity records from the computer sound mixer. I have tried recording it on my laptop, and i've tried recording it using a faster computer (one with 1 GB of RAM) but it does the same thing. I was just wondering if anyone else experienced this and if they found anyway around this: besides maybe having one computer run the drum machine, and another run the recording program.