i386/90949: kernel panic!

[Alex]

>Number:         90949
>Category:       i386
>Synopsis:       kernel panic!
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec 27 03:10:04 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Alex
>Release:        6.0-RELEASE
>Organization:
SiegerStein
>Environment:
FreeBSD siegerstein.org 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Sun Dec 25 01:50:55 UTC 2005     root at siegerstein.org:/usr/obj/usr/src/sys/GENERIC  i386
              
>Description:
/var/log/message
...........................................

Dec 26 04:58:02 siegerstein syslogd: kernel boot file is /boot/kernel/kernel
Dec 26 04:58:02 siegerstein kernel: 
Dec 26 04:58:02 siegerstein kernel: 
Dec 26 04:58:02 siegerstein kernel: Fatal trap 12: page fault while in kernel mode
Dec 26 04:58:02 siegerstein kernel: fault virtual address	= 0x0
Dec 26 04:58:02 siegerstein kernel: fault code		= supervisor write, page not present
Dec 26 04:58:02 siegerstein kernel: instruction pointer	= 0x20:0xc080f11a
Dec 26 04:58:02 siegerstein kernel: stack pointer	        = 0x28:0xccbeaae0
Dec 26 04:58:02 siegerstein kernel: frame pointer	        = 0x28:0xccbeab10
Dec 26 04:58:02 siegerstein kernel: code segment		= base 0x0, limit 0xfffff, type 0x1b
Dec 26 04:58:02 siegerstein kernel: = DPL 0, pres 1, def32 1, gran 1
Dec 26 04:58:02 siegerstein kernel: processor eflags	= interrupt enabled, resume, IOPL = 0
Dec 26 04:58:02 siegerstein kernel: current process		= 36 (swi4: clock sio)
Dec 26 04:58:02 siegerstein kernel: trap number		= 12
Dec 26 04:58:02 siegerstein kernel: panic: page fault
Dec 26 04:58:02 siegerstein kernel: Uptime: 3h40m38s
Dec 26 04:58:02 siegerstein kernel: Dumping 255 MB (2 chunks)
Dec 26 04:58:02 siegerstein kernel: chunk 0: 1MB (159 pages) ... ok
Dec 26 04:58:02 siegerstein kernel: chunk 1: 255MB (65264 pages) 239 223 207 191 175 159 143 127 111 95 79 63 47 31

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only, when I i  Internet and use opera or linux-opera ( /usr/ports/www/opera && /usr/ports/ww/linux-opera) my mouse freeze, HDD light and then I reboot :-)

It was to march times :-(   
>How-To-Repeat:
              
>Fix:
              
>Release-Note:
>Audit-Trail:
>Unformatted: