I see lot of duplicate issues being created. This is because searching for already existing issues is left to the user which is painful. I see the following changes could improve this page:
After users tabs out of the Title textbox on the Create Issue page, show related Issues with # of votes automatically based on intelligent search.
The search results should have a way to increment the vote directly from that page.
have more attributes like pre-defined Category, pre-defined Type, browser used etc. This will help streamlining the issues better.