Hey, that WMI issue was a pain, however, it is resolved for us. It came down to 2 things actually:
1. The quota was wrong specifically for "MemoryPerHost". It was off by 1 bit which resulted in problems. Originally it was set to 4294967296, the 6 pushing it past its capacity. We had to change it to: 4294967295
2. Since there were other tools that accessed the Windows Event logs within our infrastructure, we had to disable Windows Event log capturing on Site24x7. I actually created a rule to automatically disable it and change monitoring polling to 5 minutes when new servers are added.
With these two changes, our WMI issues went away.