[B.0]Input / Collision Glitch

[Jaladir]

Just started playing, really enjoyed it, but after a match or so noticed my controls started to glitch. Basically, it wouldn't let me move more then a small bit, almost as if I had fallen through the floor and was colliding with the floor on every side, except I hadn't fallen through - in two cases, I was actually hovering above the floor, kinda in a permanent state of falling.
Restarting the game didn't help.
Is this a common issue?

Specs:
ASUS g73jh
i7, 1.60GHz
8 GB RAM
Windows 7 64 bit
ATI HD 5870
Wireless internet, speedtested at 19ms ping, 14.52 Mbps download, 0.88 Mbps upload

Jaladir