[firewire hdd] "ieee1394: sbp2: aborting sbp2 command&q

[YANOUSHek]

The whole story is:
Lately I bought an external HDD case (Welland ME-340U2F) and a 160GB WD Caviar disk with 8MB of cache. I had no problems with turning it on and making partitions. The problems occured not so long ago, when I was watching a movie (from the external HDD) - mplayer had just locked up, it was the first time I saw something like that. When I looked at the movie partition I found something like:

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Movies $ ls
        .            .    2.f   e.         µ1µ1.µ1³   µ1µ1?.ö1w  ö1ö1.ö1?   t         v.r
        .            .    2.f   i.s        µ1µ1.µ1ù   m.o        ö1ö1?.s1y  t.  
        .    2.           a.    µ1$2?.ö1w  µ1µ1?.ö1µ  ö1ö1?.î1?  o.a        »1»1.»1¼
        .    %2%2?.%2°    a.p   µ1µ1.µ1ä   µ1µ1?.ö1µ  ö1ö1?.î1¿  p.t        v.  

That didn't look good. I looked at the logs and foud something like that:

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Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 64 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 65 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 66 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 67 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 68 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 69 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 6a 00 00 01 00 
Jan  6 02:07:58 gill ieee1394: sbp2: aborting sbp2 command
Jan  6 02:07:58 gill 0x28 00 03 e6 8c 6b 00 00 01 00 

I can tell you that this is the thing, but I can't manage to get it working properly. I found something about the serialize_io (I have sbp compiled into the kernel, so I added it to /etc/modules.conf at the very end, maybe it should be somewhere else? Do you know how to check, whether the serialize_io is set?), but that doesn't help at all. I'll be glad if someone could point me something I'm missing here.

Oww... I forgot to add, that when I restart the computer all files become normal again except for the one that was being used at the time the error occured. I lost many films this way until now, and I don't want to lose any more. HELP!