I'm used to controls/skills not working (I'm a nightblade), although it's driving me mad, but I've just experience quite a time of not being able to do anything but move or jump. I had full stamina, health and magicka bars but couldn't fight (standard mouse clicks), roll, crouch, swap weapons or use skills (and happened to be down a nasty public dungeon to boot). I also got an ominous warning that my "equipment is damaged"; the last time this happened I ended up with a massive repair bill as all my armour seemed to have degraded to the max! Finally I got unceremoniously kicked off the server
This game is so full of bugs it's unbelievable but a complete failure to do anything but move is pretty major!
I am one of The Great Mediocracy, those whose role in life is to provide the baseline by which The Few deem themselves Great.