I use GW 8.0.2 beta client on Windows 7 x64 and encounter this problem:
Sometime I click on an Folder, GW client hangs, the windows get gray and
the title bar states "not responding" (in German), after a few seconds
GW works again. But this delays are nagging.

German Windows 7, 64 Bit, German GW 8.0.2 beta client, back end OES2
SP2, GW 8.0.2 beta

Any ideas how to solve this delays?