It's not just keybindings, its macros as well. Here's 3 tests I've done:
1. Checked to make sure autorun is still bound to mouse4.
2. Checked using mouse4 on space-saver macros that use mouse1-4/5.
3. Tried rebinding mouse4 to another action
4. Tried using mouse4 on firefox (mouse 4 and 5 are my forward/back keys and it works there).
But my computer updated last night and all of a sudden it works again. Maybe I just needed a reboot lol.
EDIT:
I think with the gear I have right now the MM spec would be better for me (I have no level 70 gear atm, as instead of grabbing gear I've just been farming for gold to use on my alts). So I think I'll use this spec for now:
0/43/18. I know its not quite what anyone gave me but they helped me design mine.
Edited, Nov 20th 2007 9:13am by skribs