I see this problem has been encountered on the Linux build
I am on a Mac Pro 2.66 xeon processor, 5gb ram, ATI4870 512gfx and running the  latest version of Lion. All the keys apart from S work. The computer is at least 5 years old now - but it's fine...runs SCII, TF2 etc, without issue.
I tried running the game on my 1 yr old Macbook Pro (i7 4gbram 330m gfx). It runs a treat.
Very conscious that we're only at Alpha stage, so not moaning - just reporting so you guys are aware of the problem. Let me know if you need any more details of the rig it's on.
I let support on the Humble Bundle know of the problem too but thought I'd pass it onto you guys direct.
All the best.
P#1868 Posted at 2011-11-01 04:11
tags: osx controls