Just received the following in an email from Canon USA:

Canon has released a firmware update for the EOS 5D Mark II digital SLR camera.

Affected Product

EOS 5D Mark II digital SLR

Firmware

Firmware version 2.1.1 incorporates the following fixes and improvements.
1. Fixes a phenomenon where shooting stops after capturing one image when in continuous shooting or the Auto Exposure Bracketing (AEB) continuous shooting setting.
2. Corrects wording in the Dutch language menu screen.


Although there was a direct link in the email, it doesn't yet show up in the 5D Mark II page on the Canon web site. But I'd guess it soon will:
http://www.usa.canon.com/cusa/consumer/products/cameras/slr_cameras/eos_5d_mark_ii#DriversAndSoftware