6.2-PRERELEASE em not working

[Danny Braniss]

with the latest cvsup'ed, the em is sending packets but not receiving.

the last working version that i have is from 3rd. Oct.

host is S2466 TIGER MPX, but have seen the problem on PIII/STL2.

 o- there is no if_em changes that i can see.
 o- smp/up has no effect - the kernel is smp, just fiddling with
    kern.smp.disabled
 o- there is no usb, nor shared interrups that i can see.

cheers,
	danny