Today installed netrek 2010 on two machines, one vista, one xp.

On both, sometimes upon entering the game, a hint would appear
on the tactical screen. Not in a hint box spanning the tac and
galactic, but entirely on the tac sceen, with no obvious way to
remove it. Redraws of screen objects would erase the hint as a 
word written on sand being erased by waves, so that after flying
around enough, all trace of the hint was gone.