First of all, congrats on releasing a new version, people. Most things are pretty good. And I love the new base skin.
I had problems in maps like Freezeman and Magmaman, yesterday. They always lagged me out of the server but I don't know if it's a connection problem or a map problem or what. But it was always in those maps. I'll try to investigate more so maybe you can fix something.... But since I haven't seen a lot of other people with the same problem maybe you won't want to fix anything, heheh.
On another subject...
The v5 boss changes depending on whether you run Software or OpenGL. That little door trick exists so OpenGL users can fight the Software boss (Fake Man police chase), but the OpenGL boss (Mega Mech Shark) allegedly does not work at all in Software.
From the sound of things, you're running in Software. If you want to fight the other boss, you'll need to use OpenGL and ignore the door.
Who the fuck thought it was a good idea to have different bosses because of something like the user's rendering preference? Does the Shark not work on software because of technical reasons such as sloped 3d floors? If so, you could have used portal tricks to avoid them.