I ended up sending a ticket about this to Avast support.
Had a reply very quickly.
Asked to reset safezone browser, did not work.
Then asked to
Please try to remove avast! Online Security browser extension from your machine following these steps:
Please go to Start > Control Panel > Uninstall a program (Programs and Features, Add or Remove Programs)
Select avast! and click on Uninstall/Change. then uncheck the browser protection checkbox
Did the above and at the moment seems to be working okay. (Touch wood placed a finger to my head
Was a very good experience with Avast Help desk
Thanks Richard :: From avast! Technical Support Specialist
cheers