> This is more of a kernel issue. The problem is that the KVM implements > an internel virtual mouse that is connected to all but the focused computer. > These internel mice are implemented with varrying degrees of success > and feature support by KVM manufacturers. With many KVM's these > virtual mice confuse the kernel input subsystem and thus when you > switch back, mouse functionality is disrupted. After upgrading my mouse always exhibits this behavior when connected through a KVM. I don't have to switch to another system and back. This KVM has been mostly working with the initial release of Core 2, almost flawlessly with Core 1, and Redhat releases 8 and 9.