Hello,
do you have dislocated offices and users reporting a jumping or flickering mouse pointer? From my expierence this is a bandwith/latency issue that should be investigated at all.
To fix or improve this for the Linux Version of the Citrix Receiver in an IGEL Firmware try:
System->Registry and then ica.wfclient.mousetimer=0, ica.wfclient.pointerclicktime=10 and ica.wfclient.pointergrabtime=10. All settings needs to be modified, test this with one device/user first before apply these modification to a bunch of clients.
Windows versions of the Receiver do not show this effect in general, they are just slower in this scenario.
Cheers
Michael