ah, yeah. well it's 3x240/400 @ 50Hz, 120° star arrangement. europe.
as for the weirdness...
okay, so, quite regularly i'm working with two laptops at the same time. both computers are basically the same, and both have metal (aluminum) cases.
it's not a nice idea to touch both laptops at the same time... the buzzing sensation this causes is quite uncomfortable, makes one swear loudly. not a static shock... just a current of some kind.
to make it more annoying, it's not always happening.
some days everything seems pretty normal.
there's all kinds of external harddrives, audio gear, and some video stuff connected.. i kind of figured that it's one of those peripheral devices making weird with it's smps or something. everything is on the same circuit (except lighting), so i'm not really inclined to suspect the poly-phase, but it's weird.