Some processes stay active after killing its PID

[Honza Holakovsky]

Hi,

I'm expecting quite curious problem (currently spotted with usage of
audacious (1.3.2 [20070405-4320]) and fusefs-wdfs (1.3.2))
After I finish working with either of these two programs (i.e. closing
audacious windown or unmounting wdfs unit), they still run on background,
and cosume all remaining cpu performance. Even if I kill its PID, it's still
running. "top" looks like this:

last pid: 21161;  load averages:  1.30,  1.33,  1.11
up 0+02:49:43  16:20:56
51 processes:  3 running, 48 sleeping
CPU states: 53.1% user,  0.0% nice, 46.5% system,  0.4% interrupt,  0.0%idle
Mem: 209M Active, 226M Inact, 105M Wired, 21M Cache, 70M Buf, 54M Free
Swap: 2048M Total, 20K Used, 2048M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
19163 root          1 132    0 19112K  4948K RUN     14:57 81.88% wdfs
18873 holakac       1  96    0 79652K 53568K select  13:14  1.66% Xorg
18911 holakac       4  20    0   104M 81280K kserel   9:06  0.00%firefox-bin


I'm running FreeBSD 6.3-PRERELEASE i386
dmesg - http://straz.shacknet.nu/junk/dmesg.txt
/var/db/pkg - http://straz.shacknet.nu/junk/pkg.txt

Don't know what other info would help :P

Thanks for any advice