In Opera, on any given page, you can right click the page and change the setting (under "reload every") for how often the page should reload. This is quite handy, but it defaults to the page's default on every site, and I have to manually change the setting to what I want each time. How can I make the default setting be to never auto-refresh?
Opera doesn't auto-refresh pages by default.
If you need anything else, you could write an extension...
For opera web browser only
for adverts try adding them to your blocked contents section, Ctrl + F12 > advanced TAB > Content > blocked content > add then enter the url of the site that supplies the advert.
eg: this site is "superuser.com" but one of its advert comes from
static.adzerk.net (shown as careers 2.0) add the "static.adzerk.net into the block content section and from then on ANY site that shows ANY advert from "static.adzerk.net will not be shown.
more advanced users should use the inspect elements option when right clicking on a page, this will let you get the advertisment suppler, reason is.. william hill betting advert is not supplied or hosted by william hill beting but a 3rd party advertiser such as 1click or 7ad. hope this helps and sorry if its a little hard to follow.