[Ndiswrapper-general] First connect successful, then nothing

[Scan-C <sc...@t-...>]

Hi!

I'm using ndiswrapper to connect to my file-server via Ad-Hoc mode. The
problem is that the first connection is successful and I can copy any
amount of data over the connection but if I close and reestablish it
there's no traffic anymore.
I can see the net present with "iwlist scan" on my notebook but I don't
get an IP from my DHCP-Server or any other traffic if I set the IP
manually.
A reload of the module usually helps but is likely to crash the entire
system. No messages in the log-files or anything. It just freezes.

I'm using kernel 2.6.16 with 16k Stack support enabled and the card is a
netgear wg311 v3. I tried the Netgear and Marvell driver but they don't
make any difference.

What could be the problem here?