I reported some bugs on gentoo bugzilla. Will still write a page/blog/wiki about the whole thing but if someone is looking for info now .. there it goes:

linux kernel 2.6.27(rc7) smp function changes + patches for ati-drivers
ati-drivers-8.532 - catalyst 8.9 crash

Got a new laptop ;) a HP Pavilion tx2550eg touchscreen laptop / tablet pc.

Progress so far:
ACPI does not work
ati-drivers (closed source) working with xorg-server <=1.5.0 only (1.5.0 is xorg 7.4 which is not supported yet) currently running xorg-server 1.4.2
sound is intel hda which only works so far with model=acer (auto does give mixer, but no sound) unfortunately it does not disable speakers when plugging in a headset (chipset is ALC268)
onboard lan RealTek 8169 (module r8169) working.