Google Docs and Norton Internet Security don’t get on

I love Google Docs. It’s become my regular word processor / spreadsheet package, and the sharing features are incredibly useful. I used it to write my 50,000 word NaNoWriMo novel last year and it didn’t break a sweat. On the rare occasion I need proper WYSIWYG or more advanced calculations I’ll use OpenOffice, but Google Docs is the future for casual work. I’ve been extolling its virtues to Abi, and for the last couple of weeks she’s been building a spreadsheet. Yesterday it abruptly stopped working, and I couldn’t figure out why.

‘Trying to reach…’ flashed red in the top left after the spreadsheet opened, but it never connected. Her internet connection was working fine otherwise. The culprit turned out to be Norton Internet Security. I could find no exception lists for websites, so the only solution has been to disable it entirely (NAV still runs, and her router has a firewall anyway, so it’s no big loss). I’ve no idea why it suddenly started happening – maybe something from LiveUpdate? Or it detects the every-few-second-saves as some kind of attack, and blocks the IP? Whatever, I thought I’d put it here for Googlers with similar problems.