Sounds like the usual annoying Samsung problem.
I don't know why it happens but it's reported many times all around the world online.
Maybe contact 48 support to see if they can advise at all.
Hope this helps.
Did that help at all?
Can you double check that your settings are correct?
http://community.48months.ie/t5/Need-Help/Internet/m-p/34493#M12560
Misconfiguration of the settings can cause it to be slow or not work at all.
If you continue to have problems with slowness or dropouts then you might need to contact 48 support to see if they can help:
http://www.48months.ie/help#ask-a-48-agent
Hope this helps.
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