Hi, Has anybody else noticed Firefox and Thunderbird behaving strangely ? OS X 10.4.8 Firefox 1.5.0.6 ThunderBird 1.5.0.7 Some of the behaviours I've noticed are : Mail window disappearing and unable to open again (e.g. password prompts appear for the inbox when going to open the mail window, but they open with nothing in the background !) Firefox appears to crash (no arrow in dock, cannot reopen by clicking on dock, but windows and processes remain).