FogBUGZ alternative?

FogBUGZ looks like a nice product, but honestly, I don’t run any Windows servers, and I don’t plan on doing so in the future. I’m wondering if there is something like FogBUGZ that runs on *nix and uses some sort of Perl/PHP/MySQL combination. Bugzilla won’t work, it’s a lot of work to install, and maintain, and if you aren’t root, well, I don’t think anyone other than root can install Bugzilla. I do like Bugzilla, but it’s not right for what I want do to in this case.

So basically something that handles features, bugs and inquiries, can use a web interface or collect issues via email, a nice, simple assigment/workflow, and is easy. Not too much to ask for is it?