User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; PL; rv:1.6) Gecko/20040113 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; PL; rv:1.6) Gecko/20040113 When I install Mozilla again in this some directory, the bookmarks dissapeard !!! Could You create some installation, which ask You: "Do You want delete old Bookmarks ?". PLEASE. I don't want create bookmarks again. In INTERNET EXPLORER when You install browser again, the bookmarks is staing. Reproducible: Always Steps to Reproduce: 1. 2. 3.

The bookmarks along with all your other settings are not normally deleted on reinstall/uninstall. Is your profile stored in the default directory, or where?

many others have reported this - some are collected in bug 205591

*** This bug has been marked as a duplicate of 205591 ***