Black boxes I have a thin client wyse and the screen keeps getting black boxes they start small and than cover the whole screen, the only way we've been able to fix it is by restarting the thin client
Computers & Internet - WYSE - V - V90 Network Terminal
Answers & Comments
In the "experience" tab, uncheck the "bitmap caching" box and the problem will disappear. This is checked by default, but causes the black boxes in most situations unless you uncheck it.