So i was craving some good ol' dark souls. So i started a new character on my xbox 360 and have been playing for a bit and after going down the elevator in the church underneath the gargoyles i jumped down and grabbed all the things out of the chests in that little secret spot in firelink and now my weapon is swinging really slow as if i were bearing too much weight, but ive been using the same equipment since i started the game. Any ideas?

That's really strange. Equip load doesn't affect attack speed (at least as far I know), so it couldn't be that. What weapon are you using? If it's a halberd type weapon, there's a mechanic in DS1 only where you stagger if you don't hit an enemy.

Have you actually looked at the weapon stats to confirm you still meet the requirements? Not really sure what the cause could be but it might help to be able to confirm it's straight up is a bug.