I have been trying to solve the login problem of hotmail as well as yahoo. And accessing some sites like addon.mozilla.org But failed. I cursed both the services alot as very important emails were to be received by me. I was depressed. Visited many forums no solution just people's crying. But on November 23rd 2008 I found the solution.
Congratulations. . Because by the grace of God I am a genius , Hahhaha, I have found a solution. I have recently installed K-Meleon Browser "kmeleon.sourceforge.net/", And volla I have successfully logged on my hotmail as well as my yahoo account and can easily open other sites where as couldn't login in firefox. Install this browser and you are good to go. There is no problem with hotmail and I was cursing the poor guys previously wrongly.
I want others to post this solution to as many sites as they can. Secondly i want to give a suggestion. solution based sites should not impose registration to users. Instead they should post the comments after moderation. And firefox should solve this problem as sson as problem otherwise people will choose other browsers. I love firefox but I hate this bug which even the latest version hasn't solved. Cheers and best regards. Omer the Great.