In categories like groups rewrites when threads start to come into second page it's impossible to see them. Whole 2nd page can't be found. ( 404 Not Found )

Not sure I understand the question... is this the same bug as this -t406.html ? If so it's now fixed... if not could you provide more details? (Exact links & steps to take to reproduce it?)

Yeah it's fixed ^^

*bearhug* Hez