When I use Tools like Brush in GIMP there are big delays in the tool's response time from when I move the mouse until the brush cursor responds to my movement. I don't believe that this is the way GIMP should be on OS X. I am running OS X 10.6.6, X11 XQuartz 2.3.6 and 64bit GIMP 2.6.11 from http://gimp.lisanet.de/Website/News/News.html I have a 2.93GHz Core 2 Duo with 4GB ram, so my hardware shouldn't be the issue. I've tweaked GIMP's Preferences/Environment/Resource Consumption/Tile Cache to 2GB so it should have plenty of ram. I don't know what the problem is. This tool latency issue is really ruining a great app. Any help appreciated, thanks.