NIC re-enumeration on DL165/185 under W2008 server

[Princer 800]

We are having an issue with two DL servers that seem to occasionally re-enumerate the NIC drivers running under W2008 server.
THat is we are now up to #8 or so instances of the NIC. Similiar to when the MBD is changed,etc.
THis has caused all sorts of issues as one can imagine.
One system is also running Hyper-V - which of course really messes up virtuals.
Other is plan W2008 running Exchange as only app.
Using correct drivers and have flashed system to latest known flash.
Have a very unhappy client.