After the update to client version 9.3, we get for all servers an alert, that the free memory is over the configured limit. It seems, that the agent calculates the free memory wrong. When checking the machines, there is enough free memory. It seems, that not only the actually used ram is taken, but also the buffered ram.

Hey Joerg, 

So the current release does not have changes associated to Memory or performance. Note : if the you are looking at the exact memory utilization you can follow the below steps

Configuration --> Profiles --> performance counters --> select machine and select category -->