Hi Zhonghui, I had exactly the same problem on a Toshiba Tecra M9, intel 4965, iwk driver. I followed your steps to set the wifi manually and now the connection is rock stable. Thanks!
P. P.S. I've filed http://defect.opensolaris.org/bz/show_bug.cgi?id=6817 for this issue -- This message posted from opensolaris.org
