ainda timeout sql2005

ola a todos, ha algumas semanas passei no forum um problema com meu
sql server 2005 dando a mensagem abaixo quando tento entrar no
sql server management studio, raramemente entra com time-out 15 seg.
qdo tento aumentar o tempo, entra mas fica lento os recursos para
manipular as tabelas. E as outras vezes da a mensagem abaixo.

alguem poderia me auxiliar????



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Cannot connect to server2003.

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Tempo limite expirou. O tempo limite esgotou antes da conclusão da operação ou o servidor não está respondendo. (.Net SqlClient Data Provider)

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For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=-2&LinkId=20476

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Server Name: server2003
Error Number: -2
Severity: 11
State: 0


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Program Location:

em System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
em System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
em System.Data.SqlClient.TdsParserStateObject.ReadSniError(TdsParserStateObject stateObj, UInt32 error)
em System.Data.SqlClient.TdsParserStateObject.ReadSni(DbAsyncResult asyncResult, TdsParserStateObject stateObj)
em System.Data.SqlClient.TdsParserStateObject.ReadPacket(Int32 bytesExpected)
em System.Data.SqlClient.TdsParser.ConsumePreLoginHandshake(Boolean encrypt, Boolean trustServerCert, Boolean& marsCapable)
em System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boolean& failoverDemandDone, String host, String failoverPartner, String protocol, SqlInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean aliasLookup)
em System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
em System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
em System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
em System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
em System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
em System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
em System.Data.SqlClient.SqlConnection.Open()
em Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.ObjectExplorer.ValidateConnection(UIConnectionInfo ci, IServerType server)
em Microsoft.SqlServer.Management.UI.ConnectionDlg.Connector.ConnectionThreadUser()
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