1.3.3 compiled, running with a glitch - help?

I'm looking for help.

I've compiled 1.3.3 and tried running it. All else is well, I think, BUT....

The problem is a screen (X box) that flashes with every keystroke (all programs) and often enters double characters.

I installed the following before compiling:

bison 2.3
s-lang 2.0
flex 2.5.4

I'm running Mandriva 2006, and using their X libraries.

My machine is a Dell Latitude 600.

Any idea how I can settle down the keyboard/display?

thanks,
jamie