I blieve the full plate +2 created by limited wish will slow who ever wears it by 1 or 2 speed factors.
I didn't notice at first until one of my character (Anomen at the time) was walking slower than other characters (so was his attacks). I tested it by having mazzy race anomen and he was clearly slower. I didn't know the problem so I played on. Then, I got a better armor for anomen so I switched his to mazzy. Then I noticed mazzy is slower. I took off the armor and she's normal again.
Don't know if this is a bug or just a prank by that stupid genie.
Another problem, anyone know how to stop Keldorn from killing Viconia? He just says "I gave you your warning!!!" and slaughter Viconia w/ his holy avenger and boot of speed...