Hello. We have too much messages (3-5 in 5-10 minutes) about "invalid host availability data". This messages has appear after upgrade zabbix to 2.0.7

 28146:20130813:141341.920 invalid host availability data
 28195:20130813:141342.765 invalid host availability data
 28242:20130813:141403.298 invalid host availability data

In logs I can't find, to which host it does.
We have 2500 hosts and 350000 items in monitoring and I afraid about turning on "DebugLevel=4".

About host availability data - we check ipmi and zabbix-agent availability. We have unexpected "ipmi not avaliable" with error "cannot connect to IPMI host: [22] Invalid argument" about 80 hosts (from 1500 physical). We already have applied patch for openipmi (for connecting to ipmi with privilege USER).

Is any possibility to try debug this? Will something appear in logs about "invalid host availability data", if I turn on "DebugLevel=4"?

Thank you.