I can't remember if I asked this before but if anyone is still able to, could they try the latest version (from this thread) and turn off the double buffering (On the misc tab of the settings dialog) and see if the problem still occurs?
sure.
version m:
1) seems to only want to be installed in the main memory
2) unchecked double buffering, went to full screen, did a page down. as soon as I did that, the square appeared which showed a border around all the edges, as well as show the bottom task bar.
3) could not exit the reader - the x in the upper right would change color, but fail to exit. had to use the process manager to kill the pid. pid seemed to disappear, but the task still seemed there (bottom of the task bar). went to the task and was then able to x out of the program.
version i (as in indigo):
1) installs to my sd without any complaints.
2) everything works great. can page up and down without the task bar or the border showing up. everything is great except a very tiny blue line at the top of the screen (probably from the background). not sure why it's there.
3) able to exit without any trouble.