AVM Fritz WLAN stop working after some time

Hi openSUSE Forum,

I use openSUSE 11 and install the fritz wlan stick thru ndiswrapper. With the fritz ndisdriver an acx driver load the same time. I can’t remove this acx driver (blacklist module etc). Then I remove the acx.ko. Now my fritzstick works for a while but when I start a download (openSUSE DVD) the Download stop’s after some Megabytes and this error appear for any internetrequest in demesg:

ndiswrapper (NdisWriteErrorLogEntry:191): log: C000138A, count: 0,
return_address: f9397c2f

Please Help

Thanks Marc