I would suggest renaming the maya directory in your home directory to maya.old and then relaunch maya... It seems that that directory may contain corrupt data for your own preferences. Maya will rebuild a clean one and then go from there.
Chris (formerly R@nSiD)
When the power of love overcomes the love of power the world will truely know peace - Jimmy Hendrix
Winner SM VFX Challenge 1
3rd Place SM SteamPunk Challenge (May 2007)