I have a Dell Precision T5500 running ESXi 5.0. It has two Intel Xeon E5507 CPU's and 8 GB Ram.
Whilst running just one VM which is setup to have 4 cores and 2GB of Ram I find that if I click off the vSphere Console Window of the VM and do something else on my local PC then try to click back onto the vSphere Console Window of the VM it is unresponsive for 30secs - 1min. When I am actively using the vSphere Console Window everything is fine and there is no freezes. I have even found a similar behaviour when I am using a Remote Desktop Connection to some of my VM's.
I am not an expert in vSphere but I know enough to get it installed and configured. As far as I am aware it is a straightforward install with no special configuration or setup. This issue is not overly a problem but it is more of an annoyance and I would like to learn how to investigate and resolve it if at all possible.
Looking forward to hearing your thoughts and suggestions.