Can't move object

Hi, I was making a fantasy forest scene when suddenly one of the objects i made started moving back to where it was after i pressed the f12 to render the scene no matter how many times i moved it then I noticed that in "Object"s tab the transforma panel was green like it shows on the picture.

http://img860.imageshack.us/img860/527/errorrm.png

What should I do ç_ç this is messing my whole scene

The green colour indicates it has keyframes assigned to that parameter, that’s why it snaps back to the same location. Delete the keyframes by going to the frame where it changes to yellow and RMB on the yellow boxes to remove keyframes. Alternatively you can delete them all from a graph editor window