I am using lazarus snapshots(0.9.29/win32)/(0.9.31/win32) on winxp/win7,and i installed virtual treeview(new port 4.8.6 branche). when I put a virtualstringtree component on a form, and add new event for this virtualstringtree component, then lazarus die. with full-speed running CPU(one-core) or use 50% CPU(two-core).