We learned of a couple of serious issues with our update system when we shipped Firefox 1.5 RC1. Thanks to everyone who tested and gave feedback. In addition to fixing some issues in udpate, we also took some changes related to security bullet-proofing and a few last-minute fixes for things like updating the credits list and getting our bookmarks file updated. These fixes will go out in a Firefox 1.5 RC2 this Friday if all goes well and we could use some help testing the builds before then. Please grab one of the builds below and if you run into problems, let me know in the comments here. As always, please let me know what OS you're on if you are experiencing difficulties with this build.
Win32: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2005-11-07-12-mozilla1.8/
Linux: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2005-11-07-12-mozilla1.8/
Mac: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2005-11-07-12-mozilla1.8/