More than 1 user able to use a single profile on network

[siebkens]

I have 3 networked computers sharing an internet connection & would like to be able to be on the internet with more that one user at a time in the same profile (sharing bookmarks & email). I realize that only 1 computer can have the email window open at the same time, but I get a "profile already in use" error if I start Mozilla on a second computer.
Thanks!