Let's finalize new Help Desk Portal concept. We are starting development next week, so you have a little time to provide valuable feedback :)
Contains all issues with filtering option. State of the each issue is highly visible. It shows whether bug created from the issue and when it will be fixed. Also if someone knows solution, he may attach solution to the issue right away.
When someone post an issue, Help Desk Portal checks on the fly whether similar issues already exist and display the list on the right. Moreover, it displays possible solutions (nothing special, just keyword search with results ranking). It will help to avoid issues duplication and in some cases will save people time.