Slide Left + Speed Toggle is buggued, when i tried to do it, my character doesn't move (ir works with (Slide Right + Speed Toggle), is this a bug?

Probably your [url=http://en.wikipedia.org/wiki/Rollover_(key)#Key_jamming_and_ghosting]keyboard[/url].

I have the exact same proble. (Shift is my Speed Toggle and lets me do it with Right but not Left) Anything to fix this ? My character is a bit stuck when doing it on right. Now, it's still playable but I would like to know if there is a fix ?