VirtualBox 4.2.1 is released, but USB seems not to work in OpenIndiana

VirtualBox 4.2.1 is release.
Installation on OpenIndiana Build 151 with Illumos repository works.
Windows XP starts, but USB-Devices seem not to work:

Also a modinfo shows, that the module is loaded

root@solewer:/opt/VirtualBox# modinfo | grep vbox
219 fffffffff8b49000  2e370 296   1  vboxdrv (VirtualBox HostDrv 4.1.2r73507)
259 fffffffff7921550    d48 297   1  vboxnet (VirtualBox NetAdp 4.1.2r73507)
261 fffffffff8d33000   7960 298   1  vboxflt (VirtualBox NetDrv 4.1.2r73507)
261 fffffffff8d33000   7960   -   1  vboxflt (VirtualBox NetMod 4.1.2r73507)
262 fffffffff8d3b000   4a08 299   1  vboxusbmon (VirtualBox USBMon 4.1.2r73507)
263 fffffffff8d40000   75d8 300   1  vboxusb (VirtualBox USB 4.1.2r73507)