I have been struggling with this issue quite a bit recently. We are running Citrix 6.5 XenApp with Receiver 4.0. Any Windows 7 or newer operating systems run all published apps just fine. On our systems running Windows XP they run all apps fine with the exception of our software which we develop in house. It is developed in Java and is executed using a Batch file. When running this app ONLY ON WINDOWS XP we get very slow screen draw issues. For example the login window will draw a square and then fill in with the actual window after a few seconds. Then any window we open draws similarly with the surrounding window first drawing and then the contents of the window filling in after a few seconds. Just wanted to check and see if anyone had any recommendations on this.