Vista - Windows Live Messenger Help [No error on Sign-in]

Hello everyone,

I've been trying to fix this for several days now and none of the fixes that
I've found and tried worked.

The problem starts with signing in onto Live Messenger. It starts signing in
and after a few seconds it returns to the sign-in screen without any prompt.

After trying the following I'm still facing the same problem:
- Remove contents of Windows Live Contacts Folder
- Remove Windows Live Contacts Folder
- Remove contents of Windows Live folder
- Remove Windows Live folder
- Check date/time through "control timedate.cpl"
- http://messenger.jonathankay.com/allsteps.aspx?ID=16
Windows Firewall fix attempt
- Using Kaspersky 2009, configured it for Windows Live
- Tried with disabling Kaspersky security completely
- Downloading the 3 dependancies (Contacts.msi,crt.msi,dw20shared.msi)
- Completely uninstalling Messenger using ZapMessenger
- Registering a new account
- Changing passwords
- Trying the fixes for every explained errorcode
- Clearing the HOSTS file(s) due to Spybot Search&Destroy
- Using Windows Live Messenger with any of the compatibility options
(Win95,Win98,Win2000)

These are some errors found in the errorlog:
Zone_Contact_Platform_Errors Contacts store failure, forcing Logoff.
Zone_HotmailProtocol CMNSNet:isconnectInternal@newsgroup: called with
hrDisconnect = 0x81000312
Zone_HotmailProtocol CPresenceServiceImpl::OnMNSDisconnected@newsgroup:>
Error: 0x81000312, Hint: 0 msec

On a side note, The oldest MSN Messenger that comes standard with Windows XP
(4.7.0.3001, Version dated 2004) works like a charm, no problems whatsoever.

The only thing I haven't tried yet was completely formatting my PC. But I've
read in a few posts and articles that it did not fix anything for other users.

Configurations:
- Windows XP SP3
- Kaspersky Internet Security 2009
- Spybot Search & Destroy
- Using a modem where everything is forwarded that needs to be forwarded

If you need any more info please ask and I'll get it ASAP, will be checking
this thread multiple times a day!

Thanks in advance

It's been 2 days already and not a single reply. I'm posting on the microsoft
forums here right?

If there really is no solution to this I'll just format my C drive but I'd
rather avoid that ...