[CentOS] dragging windows leaves traces

I have an excellent nvidia graphics card, I get excellent fps, all agp features are installed correctly etc.

When I drag windows around wit hthe opaque settings on it leaves traces for a couple milliseconds as it redraws the window, but it just looks so crummy to see.

I am having a hard time convincing people that using linux is a good idea.

People make judgements on this type of thing and they think that linux is slow compared to Windows.

When I had windows installed on this same machine dragging windows around did not produce any traces.

Using linux on the desktop looks like a throwback to windows 95 on a 486.

Does anyone have any advice on how to make X redraw windows better.