Resolved: All NPCs sharing some sort of clientside code?
 

I caused some sort of glitch where scripts carried over:
1) Logged on server "Shadow Kingdoms"
2) Entered "pyrocomm.nw" from level "fkstart.nw"
3) Exited "pyrocomm.nw" to level "fkstart.nw" (at this point there was some sort of hurt effect on my player)
4) Warped to various servers, all of the npcs would hurt me if I touched them.
5) Finally touched a NPC that does a message ; and it was fine.
6) Reproduced the glitch (!)
7) Restarted Graal
8) Attempt to reproduce failed.