SharePoint 2010 - Site Collection Error

Timestamp                  Process                                     TID       Area                              Category                          EventID    Level         Message     Correlation
07/12/2012 12:36:21.37     OWSTIMER.EXE (0x048C)                       0x0A2C    SharePoint Foundation             Claims Authentication             fsq7    High        Request for security token failed with exception: System.ServiceModel.EndpointNotFoundException: Could not connect to http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc/actas. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:32843.  ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:32843     at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)     at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, ...    5181c3f2-ce9f-4e97-8cc6-7123fd4649cc

I recently create new site collection and now i cannot connect to my old and main one, above is the .log text

Thanks for your help

Aleksandar Delcevski, Web-administrator School of Journalism and Public Relations Jurij Gagarin 17-1/1, 1000 Skopje, R. Macedonia t: + 389 2 3090 004 mob: +38972 257 565 a.delcevski@vs.edu.mk; www.vs.edu.mk; www.medium.edu.mk; www.unescochair-vs.edu.mk