I've been running the 1.59 com.c for 24 hours now.  I have not
gotten the wedges that were causing problems before. I have gotten
a couple of drops in that timeframe but cannot verify which end
of the link dropped. Overall, the performance seems to be better,
but it would be nice to figure out these overflows.

The driver has logged the following information in the past 24hrs.
I cannot pinpoint any corrilation of this log to the drops.

com0: 3 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 7 silo overflows, 0 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 7 silo overflows, 75 ibuf overflows   <--- possible drop
com0: 1 silo overflow, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 4 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows
com0: 0 silo overflows, 45 ibuf overflows
com0: 1 silo overflow, 113 ibuf overflows
com0: 3 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 5 silo overflows, 0 ibuf overflows
com0: 5 silo overflows, 124 ibuf overflows   <--- possible drop
com0: 4 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 16 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 2 silo overflows, 0 ibuf overflows
com0: 1 silo overflow, 0 ibuf overflows