The yukonx (8.10.4.3) device drivers used on my Tecra Toshiba Labtop hangs under my OpenSolaris 2008.05 (snv99) . To resolved this I have installed the last skge (8.19.1.3) device drivers
The last skge Marvell Driver (http://www.syskonnect.de) for Solaris 10 x86 is available here: Download But failed to install in OpenSolaris. The reason is because skge postinstall script does not use the right device_driver aliases for OpenSolaris 2008.05. So to make it works use the following procedure: http://blogs.sun.com/jb/resource/resources/Install-skge-opensolaris.html.