I can use those type permalinks on my test setup just fine. They work, no problems.
Works fine for me: http://test.ipstenu.org/uncategorized/hello-world/
Not that I ever recommend this but there you are.
What OS are you on (linux, IIS, etc), have you tried turning off plugins?
Thread Starter
JakkeL
(@jakkel)
Yes, I did all those magic things could find from here and everywhere. But seems lika the problem has solved: simply tags got update and everything is just fine, sun is shining and the world is even roundare than yesterday 😉
So the bad guy was one plugin, not WordPress – sorry guys 😉