There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read how to get help
After loading Grabit (via WINE), I go off to do something else and when I want to go back to Grabit to check on the progress, I just can't! All I get is this weird little blue vertical bar in the middle of the screen.
I don't use any applications under Wine... but sometimes get Java applications failing to render their windows properly... disabling desktop effects (compiz) solves this for me. Maybe you could try this.