You can easily block a website on Firefox — but you'll need to download the Block Site extension first.
Just did a clean install of Windows XP SP2, and went and dl Firefox. Went to enable single window tab browsing so went Tools => Options => Advanced => Tabbed Browsing<BR><BR>Turned on Select new tabs ...
You can easily update LastPass in Firefox to make sure the program is running properly. Here's how to do it.