Yes, I can contact the author
because I am the author! I got a little sidetracked with my day job (for about 2 years)!
You can now find cbrowser alongside cscope at http://cbrowser.sourceforge.net/. The latest version is 0.8, which fixes a few problems.
The stability problems I found were mainly with the syntax highlighting in certain files. I usually turn it off. I read that Tcl 8.3 has fixed a regexp bug that would go into an infinite loop, and I suspect that this is the cause of that lockup. I haven't tested to confirm this, but I did want to mention it anyway.