Article categories slightly broken

I say slightly coz the module itself seems to be working fine :)

As mentioned by someone else, clicking on any category that has spaces in the name leads to white screen.

Clicking on a link with no white space but with a number in the brackets saying there articles in there leads to the screen you expect to get to but claims "There are currently no posts in this category" which I don't believe as the category wouldn't be a link if there were no posts in it :P

I figured I'd make a new one as I haven't yet stumbled across any other issues that contain my second problem.

So what blatantly obvious thing do I have to do to make it work? :) I do have taxonomy access (the big scary one, not TAC lite) and permissions are set correctly on there (first thing i checked, I've done stupid things like not allow things to be viewable and not realised it before ;)