Server/ASP Error?

Hi,

I am not too sure if this has been discussed before.

My servers randomly gets this error:

//
Server object error 'ASP 0177 : 800706ba'

Server.CreateObject Failed

/booki/p-sd.asp, line 4

The RPC server is unavailable.
//

The only solution to this is to reboot the server. As this error does
not occur all the time (perhaps once every few weeks - for each
server), I am unable to trace to the root of the problem.

Anyone has any ideas what causes the error and how I could fix it?

All servers are on NT4 SP6a.

Thanks for the help in advance!

cheers,
eddie