my main SS2 has started really spewing stray interrupts lately:

stray interrupt ipl 0x5 pc=0xf0006648 npc=0xf000664c psr=900010c7<EF,S,PS>
stray interrupt ipl 0x5 pc=0xf000685c npc=0xf0006860 psr=904001c1<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b14 npc=0xf0007b18 psr=904000c2<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b14 npc=0xf0007b18 psr=904000c3<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b14 npc=0xf0007b18 psr=904010c2<EF,S,PS>
stray interrupt ipl 0x5 pc=0xf0007b18 npc=0xf0007b1c psr=904000c2<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b18 npc=0xf0007b1c psr=904000c3<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b18 npc=0xf0007b1c psr=904000c6<S,PS>
stray interrupt ipl 0x5 pc=0xf0007b18 npc=0xf0007b1c psr=904010c2<EF,S,PS>
stray interrupt ipl 0x5 pc=0xf004ffe4 npc=0xf004ffe8 psr=908011c4<EF,S,PS>

are all the different messages i've seen (most of them 10-15 times
in the past couple or so of days).  i have this installed:

  lebuffer0 at sbus0 slot 3 offset 0x40000: 128K memory
  le1 at lebuffer0 slot 3 offset 0x60000 level 4 (ipl 5): address 08:00:20:0f:5e:de
  le1: 64 receive buffers, 16 transmit buffers

which what i'd guess is causing this?