Problem with rt73usb and previously booted windows

Hi,

there seems to be a problem with rt73usb when Linux is booted right after Windows. Association with my ap (WPA) is working fine and the interface is getting an IP via dhcp, however the network seems dead since pinging my ap (and further) doesn't work. I have to rmmod rt73usb, replug the network card and modprobe rt73usb again for fully working network. This situation is present in kernel 2.6.26-rc5 and -rc6.

lsusb gives
148f:2573 Ralink Technology, Corp. RT2501USB Wireless Adapter

Let me know if you need further info and please CC to me since I'm not on the list. Thanks.

Chris