fonts in gtk+ applications disappearing

["Jozef Riha" <jose1711 gmail com>]

...and reappearing when i mouseover the blank areas.

hello,

i am having this weird issue w/ all gtk+ applications (checked w/
firefox, ekiga, nicotine, stardict, gimp). OS is archlinux-current,
card is Matrox G550, glib2 2.12.1, gtk2 2.8.20).

the issue can be quite well observed at
http://www.youtube.com/watch?v=U-rfhWdWu-U

thank you for any comments,

-- jozef