I found the answer in the end. You have to go to Edit>Key>Paste Keys option and change it to Merge. I had it on Insert option so it was adding keys.

;) Greenleaf

I'm having this problem when I'm animating a walk cycle using a character set, that when I've key a frame at say frame 25, it has somehow moved along to frame 26?? or when I've keyed a frame at frame...