if your walk animation is 20 frames long you have to render frame 1 to 19 for a perfect cycle and/or edit ipo-curves. blender is definately not to blame!
Thanks everyone! Here was a bit of a postmortem on the game: http://www.ludumdare.com/compo/2011/12/19/and-then-alone-at-epsilon-1-the-post-mortem/ It should explain the goods and the bads :P Means a ton! :), but what happened to the entry you were working on, was it for the jam? It really popped out when I noticed it in…