Sound disappeared when updating linux_base-fc4->linux_base-fc6

[Dmitry Lunts]

Hello,all!
 The problem is as follows.
 A couple of weeks ago I did transition from linux_base-fc4 (default
 linux support module) to linux_base-fc6. The purpose was to install
 skype2, which rquires at least linux_base-fc6 module. Along with this
 I completely reinstalled ("pkg_delete" then
 "make install clean" from recently "portsnapped" ports tree) all the
 dependent ports, including
 linux-flashplugin-9.0r159 and nspluginwrapper.
 The rusult is: skype works OK,
 but sound completely disappeared when watching videos from, say, youtube.
Video is OK.
 Sound system itself works OK (i.e., previously saved movies run with sound),
as well as skype, too :-))
 Could anyone give me a hint, is there any cure?
 Regards,
 P.S.OS FreeBSD 7.1

-- 
С уважением, Дмитрий
Best regards, Dmitry
email: eingorn777 at gmail.com
tel#: +7-917-214-6140
ICQ: 462-495-123
Skype: dialect777