Clients Disconnecting SEPM 12.1RU2

Hi,
I've run into a problem and I can't get it solved.

SEP clients are disconnecting and reconnecting ramdomly.
On the client there's an error under Connection Status "WinInet error 9" when a client disconnects.

I've been going through various help articles including this one:
http://www.symantec.com/business/support/index?page=content&id=TECH105894&profileURL=https%3A%2F%2Fsymaccount-profile.symantec.com%2FSSO%2Findex.jsp%3FssoID%3D1361912903324knEl9vA5mu8L83q1JYEcl85B66CDF5LCI975B

I am able to access "http://<management server name>:9090"

I am unable to access "http://<management server IP address>:<port used by the SEPM website>/reporting/index.php"

I get the following message when I try:

Any help would be greatly appreciated,

Thanks,

Mitka
 

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Windows 7 SP1 x64, SEPM 12.1RU2, Embedded Database