Bug tracking software with a win32/web interface

Can someone recommend bug tracking software with the following requirements:

• open source
• has a web and a windows forms interface.
• written in java or c#
开发者_开发百科

these requirements are not a must but nice to have:

• system can run on linux system (at least the db/backend)
• can integrate with svn
• integration with project management software (project management software suggestions would be welcome)

I think Trac is fairly common bug tracking system with a web interface and plugins to integrate it with Eclipse-Mylyn tasks.

It also integrates well with svn. There are possibilities to link tickets (bug reports) to svn commits etc.