My guess is that those load averages are the same load averages given in e.g. 'uptime' or 'top'. These are indications of how busy your system is right now (first number), was on average during the last five minutes (second number) and during the last fifteen minutes (third number).
A load below 1 means that your system is underworked and running idle cycles ('hey, I'm bored!').
A load of 1 indicates the system is working at it's intended capacity and everything is fine.
A load of 10 indicates that you could make 10 systems of the same configuration busy with all the tasks currently running.
A load average of 2 or 3 is often fine and has no or little impact on serving web documents but 10 is quite high. Maybe the first hosting account is a shared host with many other users using up CPU cycles?
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P.S.: Anybody knowing better, please correct me if I'm wrong!
