Keyboard navigation in R# has always been a bit of give and take for me: It is very rich, which I like, BUT it has stolen a few of the VS key bindings that I would have liked to have kept (E.G. CtrlAltB, CtrlAltP, CtrlAltV). I am happy to live with that as R# adds a lot to my productivity as a developer.
I am now starting to use R# 2.0 in VS2003 and one of the first thing I notice is that you have re-assigned Ctrl+Tab.
Ctrl+Tab is a fundamental shortcut that, in just about every windows application, allows navigation to the previous view.
If you can take CtrlTab, how long before AltF4 dissapears into R#? Will Windows be left with any shortcuts of its own? ;)
Seriously, please think long and hard before you release a product that steals very standard keyboard shortcuts.
Also, do you have a "ReSharper 2.0 Default Keymap" document?