IPS Blocked a GNU Bash

I've uploaded an image of the Norton alert
http://puu.sh/cixFP/28f9cf055f.PNG
Should I take any further action or has Norton secured the situation?
I ran Power Eraser afterwards just to be sure, the only thing it turned up was strongservice.exe which I use for my VPN but claimed the risk as "Unknown"
I've also uninstalled Skype as I know it's not exactly the most secure messaging service.

Edit: I see this is mainly used against systems besides Windows ?
I'm running the newest SP of Windows 7 64 bit if it matters
My router is a Netgear WNDR3700v3 with the newest update/firmware installed