I have a Nvidia card. Binary drivers. No KMS support. For these reasons, I've been used to a fairly awful resolution in my TTYs. I did once try increasing the resolution of the TTYs using a grub hack but that had a huge effect on the performance of the X screen - so I nuked it.
11.10 seems to be applying a high resolution to terminals for me. I feel it might be slowing down my X screen (both 2D and gaming performance is pretty poor) so I want to revert things to when I could only fit three characters on the screen at once
I had a look in
/etc/default/grub.d/00_header and started to cry. I've no idea what I'm looking for. When I did this before it was using a much simpler format.