internal connection without a proxy?

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Hello,

we are periodically getting this error on our server. I've done a quick
google and a search on the forums and have not found a simliar error crop up
anywhere. Does anyone know what would cause this error?

- We are using OracleClient/Server 10g

System.InvalidO perationExcepti on: internal connection without a proxy?
at System.Data.Ora cleClient.Oracl eInternalConnec tion.ProxyConne ction()
at System.Data.Ora cleClient.Oracl eInternalConnec tion.BeginOracl eTransaction(I
solationLevel il)
at System.Data.Ora cleClient.Oracl eInternalConnec tion.BeginTrans action(Isolati
onLevel il)
at System.Data.Ora cleClient.Oracl eConnection.Beg inDbTransaction (IsolationLeve
l isolationLevel)
at System.Data.Com mon.DbConnectio n.System.Data.I DbConnection.Be ginTransaction
(IsolationLevel isolationLevel)