Few days ago, I upgraded my Mozilla Firefox to the latest version: 2.0.0.2 which was released on February 23, 2007. It was a smooth upgrade. I jumped from 1.5.0.9. After upgrading, the first thing I checked was the extension I installed. I have all extension work without any problems. Here are some extensions installed in my Firefox 2.0.0.2:

• Adblock Plus (0.7.2.4)
• All-in-One Sidebar (0.7.1)
• ColorZilla (1.0) — With ColorZilla you can get a color reading from any point in your browser, quickly adjust this color and paste it into another program.
• DownThemAll! (0.9.9.7) — DownThemAll lets you download all the links or images contained in a webpage and much more: you can refine your downloads by fully customizable criteria to get only what you really want.
• Dummy Lipsum (1.1.6) — It generates “Lorem Ipsum” dummy text (the text is taken from the Lorem Ipsum site
• Firefox Extension Backup Extension (FEBE) (4.0.4) — Backup and port your extensions and themes.
• MeasureIt (0.3.6) — Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
• ViewSourceWith (0.0.8.39) — Open (and in some cases edit) page source with external applications
• Web Developer (1.1.3) — Add a menu and a toolbar with various web developer tools.

Besides those I-must-have extensions, I have some other installed. Great!