VMware Workstation 6.5.3
if you mouse cursor in VMware switches grab and ungrab itself, and the following solution can help you to get this problem sorted. Lately, I just emerged world and GTK upgraded to 2.18.7, this issue happened caused by the newer version GTK+.
1) Edit /etc/vmware/bootstrap
2) Add export VMWARE_USE_SHIPPED_GTK="yes"