Try these threads:

• /questions/816181
• /questions/790833

I do not know what Firefox version that you have problem with.I will not use use Firefox version 4 yet since seems like too many people have had problem with it! If ypu use version 3.x.x try this:go to web address line type in whatever site you want(to be your homepage) then go to (very top line next top help) click Tools,go to general,cick on box which says use the current page(one third dwon on this windows,the one on far left box),then go down to bottom left,click box which says:ok .....then close all (hit x all every box you will see) From then all the ONE that you selected as your homepage should re-appear when you click home(the house icon)....the problem is ,if you keep clicking on this "house" icon...there will be as one tab for each click that you click..And that is what I hate to see,feel like being spied on,especially when you use your secure logon or sensitive information being entered.Hope this will help some!