OSCAM channel clearing

Hi peeps, just started a Debian server running oscam #6018. I currently have a DM500s(whilst waiting for my HD box) and my friend has a Openbox S9(soon to have more friends connected when it's running properly). The server is running pretty much fine but we are both finding that if we have been watching a free to air channel for a while and then move onto an encrypted channel it does not clear straight away, sometimes if we go up a channel and back down it clears but sometimes we have to do this 3, 4 or maybe 5 times for the channel to clear, is there a reason for this? I can post my config files if this would help? by the way this is Full Sly UK HD.

Cheers Infuriated_P

Sorry about the delayed response. Server is Oscam and MGcamd, Clients are running MGCamd. Anymore info required mate? Is it something to do with the client time out in the config file?

Thanks for the replies have updated my config and I will let you know how it goes.