I'd suggest you update to an even newer current as some PCI retry 
   configuration tweak (exspecially for U10 machines, IIRC) went in later.
   
   Additional (but this may be only me) tweaking the value of "block_disable"
   (in sys/arch/sparc64/sparc64/locore.s) to 1 is a good idea. The effects
   this showed for me when set to 0 (the default in -current) are not yet fully
   analyzed, so this change might as well not be necessary.


FWIW, i did this on a running system that was displaying very occasional
weird network lossage (eg, ssh would give it's "corrupted bytes on input"
message and disconnect from the host -- ultra1).  mmmm, ddb.  of course,
with a 32 bit kernel i had no way to write an 8 bit number so i ended up
with "db> write/l block_disable+4 1" and now i don't get the same lossage
i had previously....


.mrg.