They disappeared recently, about the time I updated to Firefox 12.0 (I haven't been changing any settings lately). A tab used to appear for each web page I visited, that stayed visible until I closed it; now there's only a tab for the page I'm on.
I tried a little cross at the top left labelled 'open new tab', but I couldn't see anything happening. A little down arrow next to it, called 'list all tabs', just tells me what web page I can see in front of me (however many I've visited in the session). Tools - options - tabs has the option 'Open new window in a new tab instead', but it has no effect that I can see.
Is it some setting I could do/a feature of FF 12/me being dim/a combination of these?
I can still use History to go back to recent pages, but it means quitting the current page. A task I want to do needs 2 web locations open at once.
Under History I can see 'Recently closed tabs' and 'Recently closed windows' options, but they're greyed out.
Vista SP2, Adobe Flash Player & Foxit Reader were also updated recently. I use AVG Anti-Virus Free Edition 2011 (updating automatically) & Windows firewall.
Just looked again at the 'Open a new tab' option (via the little +). It takes me to a page headed 'New Browser Tab', with a search box below, and a list of 'recently visited' (at least some of which aren't). I suppose it did constitute opening a new tab, but I had to use History to get back to this forum (which then became the only tag again).
Thanks rdave (I didn't see your post at the time). I tried opening FF in safe mode; no tabs there either (but thanks for reminding me to try Safe Mode more often for problems!)
I did that, Woolwell, and it worked. Thanks!
At least, it works if I go to 'Open a new tab' each time I open a new page.
I can do what I wanted to now, but has Firefox 12 done away with automatic tabbing? (There are times it could come in handy, if it's still an option).