Some of our customers are using SplitView with Citrix 4.5. We are aware of one problem with Citrix 4.5 patch PSE450R01W2K3013.MSP that causes some conflict with SplitView. You should be fine if you do not install this patch, or are not using Citrix 4.5.

Citrix has since corrected this problem in Limited Citrix Hotfix PSE450R01W2K3020 that can be obtained on request from Citrix support.