I've had my wr250 for about a year (~4000 hard trail miles) now. I'm pretty happy with it, though a few minor things have broken:
Steering stop - it's only a tack weld.
Voltage regulator - apparently when the steering stop snaps, the voltage reg is often crushed by the left fork leg. There was no sign of damage, but it broke anyway.
Seal in the rear brake cylinder. Had to get a whole kit :silly:.
Radiator hose clamps. These seem to be single use only. I have had a hose pop off the water pump in the middle of nowhere, and so has another local, also on a wr250.
Nothing that would keep me from recommending a husky :).