wifi randomly disabling

hey guys, im running netrunner 13.12 RC2 (32 Bit) and my wifi randomly disables and enables itself every now and then, i am using a netgear usb wifi dongle and i never had this issue in 13.06 or windows 8 on my laptop

[color=#000080]It has happened not only Netrunner but with other distributions.
And I solved this way:
In a terminal type:[/color]

[size=medium]sudo apt-get purge bcmwl-kernel-source[/size]

[color=#000080]And then:[/color]

[size=medium]sudo reboot[/size]

[color=#000080]If it does not connect with ethernet cable and type in the terminal:[/color]

[size=medium]sudo apt-get install firmware-b43-installer[/size]

[color=#000080]sudo reboot[/color]

thanks, ill try that and update you if it worked on my pc, its a pain when downloading large updates or files!