CraigB
4
It would seem your system may have some deeper problems that need to be looked into as there should be no reason for IE 10 to keep crashing on you and these problems could be the reasons why the Behaviour and Script shields aren’t functioning as well, please run the first four tools from here http://forum.avast.com/index.php?topic=53253.0 and attach the logs ( not copy paste ) to your next post in this thread for one of the malware team to look over to see if there is some issue on that system.