Firmware version 2.1.1 incorporates the following fixes and improvements:
Fixes a phenomenon where shooting stops after capturing one image when in continuous shooting or the Auto Exposure Bracketing (AEB) continuous shooting setting.
Corrects misspellings in the menu screens displayed in Dutch language.
If you've run into the first issue, then it's probably worth getting a CF reader (makes for faster transfers, too, that don't use battery life).
Well, I, for one, was very distressed by the Dutch misspellings...
5DIII, XSi, A2, 10s (x2), 20-35L, 24-70L II, 28-70L, 70-200L, 70-200L IS II, 85L II, 135L, 40 Pancake, 50 Macro, 100 Macro, 135 Soft-Focus, Crappy EF-S Kit Lens, 430EX II, Metz 45 CL-4, Metz 60 CT-4 (x2), White Lightnings, and lots of other junk...