vSphere web client folder or ressource pool doesn't show more than 20 virtual machines

Hi,

we are using the vSphere web client 5.1 and when there are more than 20 virtual machines in a folder or a ressource pool it doesn't show them anymore on the left side/frame. It only shows for example "(22) virtuell machines". Is there an option that the webclient shows more than 20 machines? Using google wasn't helpful :-(

thanks

-m