Whaw, nice work.
Installed without problem in Windows 7 64...
Installed with few problems in Ubuntu 11.10 64...
Few remarks :
When compiling Lazarus with QT widgetset, hum, seems old timer app... and if a form have lots of components, the form do not show all of them.
In earlier release, in Project, there was the option : Choose LCL widgeset ( a list box shows you the lcl available, win, gtk, gtk2, Qt, carbon, etc.....).
But in RC1 i do not have find that option...
Thanks