Heyyo,
Hmm, ok, I'll check the waypoints on CS_Assault. Might just be a glitch or something.
Now, for running faster with the knife? it's true. Here's how the weapon run speeds are from fastest to slowest
Knife.
Nade is barely slower.
pistols a bit slower.
smg's, assault rifles, machine guns, and shotguns all run slower than above, all 4 guns run at same speeds as the others.
Sniper Rifles run the slowest, not much faster than normal walking pace.
So yeah, that's why when preforming stunt jumps on maps it's reccomended to hold a nade or knife out, it increases your odds of completing the jump sucessfully instead of falling to your death.
[EDIT]
Yeah, the nohostage flag bug is back Storm.. they're ignoring it and going through the hole again.