[xmonad] floating problems - vlc and dialogs

[Nathan Huesken]

Hi,

in my xmonad.hs I have:
-- manage hook - when new clients appear
floatAll     = composeAll . map (\s -> className =? s --> doFloat)
myManageHook = floatAll ["Gimp",
                         "Wine",
                         "vlc",
                         "MPlayer",
                         "VLC (XVideo output)"]
               <+> manageDocks
               <+> (isFullscreen --> doFullFloat)

MPlayer and gimp are floated perfectly. VLC is not.
Why not?

Also, is there a way to generally float dialogs?

Thanks!
Nathan