Please include problem descriptions and steps to reproduce them in the tickets.
We have to verify there is actually a bug in each of the bug tickets, and verify the fix as well. I am finding that I have to figure out what the bug is from reading your patches.
For example, problem description for this ticket might read:
On viewforum page, it is possible to "jump" to an invalid forum (-1) by selecting "Select a forum" option in the forum jumpbox and pressing Enter.
Specifically regarding this ticket, the usual usage of jumpbox by simply choosing the desired forum (and relying on onchange event handler to issue the redirect) does not redirect to invalid forums.