Are you really running your site with only 4gb ram? That's the same amount I have for my entire VPS, and my sites aren't nearly as active as yours...

At this point, since it's more than likely a server resource issue, and that's outside the scope of user to user support on the forums, I'd advise contacting your host/data center regarding server tuning and recommendations on their end.


I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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