I have Ubuntu 14.10 installed and if I connect to a network (with Wifi) first everything works great with good transferring rates. However after some time (few minutes, sometimes longer) the connection drops to a transfer rate of 0 B/s, also ping doesn't work but I remain connected. After a disconnect and a reconnect this is solved for again some few minutes.
Especially when I'm using a web installer which downloads some files this happens really fast. Browsing sometimes works very long. I ran a Wifi script at the not-working state, output: http://paste.ubuntu.com/10832694/
I couldn't find any error in
EDIT: also updated the firmware of iwlwifi now, which doesn't solve the problem.
Thanks for any help