Firefox 3.0.6, officially available as of today, fixes several security and stability issues within the browser. It also corrects a couple of glitches, such as one where users were finding parts of the browser window wouldn’t display correctly once Firefox had been open for a while. The update is supposed to have improved support for scripted commands within add-ons like Adblock Plus.
Firefox 3.0.6 will automatically pop up for current 3.x users within the next 48 hours. You can also get it manually by either going to getfirefox.com or clicking on the “Check for Updates” option within the Firefox help menu.