This is interesting. I have a video file, about 700 MB large .avi format, in E:\VIDEOS that won't rewind. I hold down "L" and it just freezes for a second, and when I release, it jumps forward about one to one-and-a-half minutes. It is quite annoying.
Now, if I trigger-finger the "L" button (Quickly press repeatedly) it will rewind, but pretty slowly.
Now, because I've always figured that too much information is much better than not enough information (When helping people, I'd prefer to know everything than nothing at all), I'm going to give a general outline of my box:
*Softmodded
*XBMC 2.0.0
*XBMC as main (and only, not including official/stock) dash
*AVI file
*696.3 MB file
*Located in E:\VIDEOS (Default video folder)
*XviD
Hope you can help! Thanks!
P.S. I have very little know-how in the modding world, I modded this box less than three weeks ago.