I have uploaded core51 update to testing tree. Because this update contain a kernel update it should tested on many machines as possible.
-Kernel 2.6.32.43
-Alsa 1.0.24 driver
-v4ldvb backport 27.4.2011
-compat-wireless 2.6.39-1-sn
-crda 1.1.1
-wireless-regdb 24.04.2011
-iw 0.9.22
-linux-firmare 18.05.2011
-zd1211 firmware 1.4
Please report if you find any problems.