Gallium r600 testing issue

[jrch2k8]

hi guyz, im testing the latest bit of radeon r600g with pageflip and swap stuff disabled and from time to time im getting this message

[ 1036.487] (WW) RADEON(0): flip queue failed: Device or resource busy
[ 1036.700] (WW) RADEON(0): Page flip failed: Device or resource busy
[ 1038.474] (WW) RADEON(0): flip queue failed: Device or resource busy
[ 1038.474] (WW) RADEON(0): Page flip failed: Device or resource busy

my system is

Linux junior-MS-7577 2.6.38-020638rc1-generic #201101192228 SMP Wed Jan 19 22:34:43 UTC 2011 x86_64 GNU/Linux

03:00.0 VGA compatible controller: ATI Technologies Inc R700 [Radeon HD 4850]

ddx git
mesa xorg-edgers/radeon ppa
xcb 1.7

btw kwin is wicked fast now XD