What is the best bugtracker / project manager?

[buzz]

I've used a few over the years. The only one flexible enough has been redmine.
multiple projects/parent child projects/public/private projects/multi user/wiki/repo browser/files/formus/documents/issues etc etc.

only thing it's ruby so if you are not familiar might take a few mins longer to config/setup.

http://www.redmine.org/

http://www.redmine.org/projects/redmine/wiki/Features

[buzz]

in addition - you can happily run php alongside ruby. you need ruby and rails and a a few other ruby libs like rack. on debian most is available as packages but you can use ruby's "gem" tool to install anything missing.

I run it via apache with mod_rails (passenger) - http://www.modrails.com/ on debian squeeze.

it was more of an arse to setup initially that perhaps some php+mysql app, but it was worth it imho.

[buzz]

What is the procedure for when u close a bug ticket with a commit but then it turns out that ur commit did not actually fix the bug?

you reopen the ticket.

[buzz]

it's up to you. you have user/group control and full control over who can do what on which project etc. why not have a read of the redmine site :-)