WLAN problems: ping: sendmsg: No buffer space available ???

Last week i installed linux on a new laptop. Everything went fine but after the first hibernate cylce downloads just stopped. Restarting the wireless cured the problem for some minutes and then the connectivity went down again...
I started to ping the router and i only saw roundtrip time larger than 50ms, where i expected <1ms. Each time the connection went down, ping failed with
ping: sendmsg: No buffer space available
After some googling around i found the solution:
Install ndiswrapper including ndiswrapper-utils
After doing a
modprobe ndiswrapper
the ping roundtrip times were <1ms and the connectivity never went down again....
To ensure that ndiswrapper is loaded during bootup do
ndiswrapper -m

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