FF updates happen way, way too often
Firefox 13 arrived and well, like suspected, plug-ins/add-ons are not compatible. Most important one for me is Kaspersky Anti Banner. So back to FF 12 for me. Mozilla states that companies have more then enough time to alter their software: 6 weeks. 6 weeks? Come on, that is way to short! FF is forcing companies to work constantly on their software just to fit in their ridiculous update scheme of every 6 weeks an incompatible update!? FF was the best browser for me but this weird, way to often update thing really brings it down. And I am not alone with this: just do a search on this way too often update cycle and you will find many, many complaints about it. I did file it as a bug but all I got back was: "Developers are giving a 6 weeks heads up to make their software compatible. If they can not do this ... well, then it is their own fault." Yep, Mozilla is beginning to show Micro$oft behaviour :(
Wšykne wótegrona (1)
this is a primarily user driven support forum, so there isn't much that we can do about it. if you want to give feedback to mozilla, use https://input.mozilla.org/feedback
my personal thoughts on the issue: most addons default to compatible anyway, so developers won't have any additional work to do for a new firefox release. if a commercial company like kaspersky decides that it wants to offer a browser addon one supposes it can't be that hard to keep up with a pre-scheduled release cycle of 6 weeks. they apparently also have the capability to constantly develop & distribute signatures every few hours.
you can also just use the adblock extension as alternative - it's free, works very well for millions of users & doesn't have any compatibility problems with new versions of firefox: http://adblockplus.org/en/getting_started