We can not logon on IDES ECC 5.0

We successfully had installed and used IDES ECC(DBMax forWin) few days and after that we can`t logon to system.

On screen we have only <b>Waiting for response</b>

Cheched syslog and found the following messages

1.SAP BASIS System:Operating system call recv failer(error number 10053)

2. SAP BASIS System:Operating system call recv failer(error number 10054)

3.DataBase Database error 810 at OPC