Just reached 25lvl with my fury specced warrior but I can say only that its very boring! rage comes so slowly and killing mobs is (semi :D) slow

What's boring and not is very much a personal opinion. As was mentioned already, gear is a major factor for a Warrior, and if leveling non-twinked it can feel quite slow especially if you go solo. Not sure what gear you have, but maybe do some instances to get some nice blue gear, especially weapons - Deadmines has a few with fair drop chance. :-)