Norton Internet Security has encountered an error

Hello

just reinstalled Windows 7 with all the usual drivers and chipset etc  and of course NIS , latest version which updated fine to the very latest with patches applied . 

Yesterday I disabled NIS (just the antivirus)  just for a few minutes and it decided to throw up a  " Norton Internet Security has encountered and error , and then a second later , said  Fixing - Success .   Since then everything's been fine ,  there wasn't even a code ,  should I just ignore it as a teething problem ? 

Thanks ,  Col .