Hi Christophe,
We opened the ticket few weeks ago. I sent all the asked informations and I've been contacted by VMware support team.
We're waiting but I think I'll escalate to VMware benelux team.
We've also upgraded to 5.2 : same results.
We're using Wyse P20, P25 and Samsung NC220 but the problem is still there.
There's no problem with the VMware software client@PCoIP.
I'll keep you informed.
Cheers,
Pat