Today I worked with Gimp as installed in RC3. I had a crash (termination) every time I tried to drag and drop a dockable window to dock bar or dockable window tab. It's not a disaster because the tab menu works to add a tab to a dock, but still, it shouldn't happen, right? I don't know if it's a problem with Gimp or RC3 or my video driver (the xorg radeon driver for the Radeon Xpress 200). Just thought I'd mention it.