I'd say about an hour but it all depends if there was some activity on your ads. LIke if you get clicks. Because when I don't get any clicks in a cycle I get an impression update quickly. But when I do get clicks it usually slower. Thank You
I still think its 15 minutes, because that's the minimum amount of time you can have your Adsense Notifier (extention for FireFox) update.
No way.. every 15-20 mins. I know because that's how much I check using SysSense and it always updates then.
Not to be a bitch, but haven't you been reading other comments? Most people have said they've seen it updated ever 15 minutes or so, so what gives you the idea of every hour?
For me, it refreshes every 30 minutes. Like i check my stats at 12:00AM and then 12:31 it is updated.