[wxPython] a few 2.3.3 questions

Hello,
I've just installed 2.3.3pre5, and I have some questions:

- I installed the "debug" version: is it normal that it is much slower than the 2.3.2.1 "release" one?

- I'm on GTK: why the look and feel is not the native one? Is there a way to restore my beloved Raleigh style?

- when I try to set the background or foreground of some controls (buttons for example) I get the message:
"wxWindows warning: Widget styles disabled due to buggy GTK theme."
and nothing happens. The same when I try to set the font. Also the demo seems affected by this, since the "Hello" button of the wxButton demo is shown in default colors, and not white and blue

- wxSplitterWindow.SetSashPosition seems to have no effect. This is true for the demo too.

Thanks a lot to anyone who will answer.

Cheers,
Alberto Griggio