Using remote X from Xming results is a slightly different problem - the panel is almost 100% black on black - Graphical effects need to be turned off in configure desktop -> Style -> Fine Tuning -> High Res Low CPU
That’s work great for me. My panel and command dialog (Alt+F2) being strangely colorized (desktop effects refuse to start too) after some manipulation in desktop settings (openSUSE 12.1 with KDE). But now this is correct and problem is fixed. Thanks caf4926!