wifi blinks on and off

Hi I’ve looked through the stickies but couldn’t find anything which seemed to help.
My problem seems to be intermittent. I can connect to the net fine but after a while web pages stop loading. This coincides with a light on my laptop which indicates whether the wireless is turned on or not flashing, the actual connection manager doesn’t indicate lost signal or anything else. It works fine on my other OS so I don’t think the hardware’s broke.
My card is a intel r wifi 5100 agn.
wireless lan is present and my kernal driver is iwlagn.
Any help would be appreciated.

Create a file called options.conf in /etc/modprobe.d/ and add the following contents, and see if that helps.

options iwlagn 11n_disable=1 11n_disable50=1

Unfortunately that hasn’t worked thanks for trying though.