Mae-East instability

Some of our peers have been dropping BGP a bit more often lately.
Somebody had a real bad day on Tuesday.

    Jul.18: 192.41.177.252 1:35:13 mae-east-rt2.es.net
    Jul.18: 192.41.177.125 1:23:29 mae-east.nsn.nasa.gov
    Jul.18: 192.41.177.251 0:59:05 mae-east-rt1.es.net
    Jul.18: 192.41.177.241 0:08:56 sl-mae-e-F0/0.sprintlink.net

Here's a list giving the number of disconnects (where there were
5 or more disonnects per day). The majority of flapping seems to be
at Mae-East and Mae-West.

  date peer hits

      Jul 18 192.157.69.250 8 rs1.sprint.ra.net NY NAP
      Jul 18 192.41.177.125 72 mae-east.nsn.nasa.gov MaeE
      Jul 18 192.41.177.251 34 mae-east-rt1.es.net MaeE
      Jul 18 192.41.177.252 56 mae-east-rt2.es.net MaeE

The July 18 problem was mostly concentrated over one 3.5 hour period
of continuous flap.

  Jul 18 07:19:28 to Jul 18 10:52:30 (122:47 / 213:02)
    192.41.177.125 took 50 hits (57:00)
    192.41.177.252 took 41 hits (62:31)
    192.41.177.251 took 17 hits (34:19)

Any clues from NASA and ESNET as to why this instability occurred at
Mae-east? Was this some form of BGP meltdown or just hardware trouble
at or getting to the Mae?

Curtis