I tried installing the latest CVS release and it works fine, however it does not work for any form of encryption for me such as WEP / WPA etc. I tried for several pain staking hours of different configurations etc and gave up and put 10.2 back on. It worked 1st time as always using the the rt2500-1.1-0-b4 driver ( does not compile on 10.3) but not letting it best me I reinstalled 10.3 tonight. It would appear that there is an error in the sanity.c file which was spotted by Psycho Dad here Serial Monkey, however upon testing this fix it did not work for me until I removed the previous install using ifdown wlan0 then modprobe -r rt2500
I then ran a make clean and added the new sanity.c file, then did a make and a make install. It still did not work until I disabled dhcp on my ethernet port ( but kept DHCP on my wirless card). I hope this saves someone some time