sony-ericsson W800 cellular doesn't work as an usb mass storage device

["\"Niklas \\\"Nille\\\" Åkerström\"" <nille.kungen@gmail.com>]

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I can't mount my sony-ericsson W800 cellular as an usb mass storage device (it doesn't show up as an device).
I run slackware-current (slackware 12.2 rc1)
Using kernel 2.6.27.7
It doesn't even show up when i run 'fdisk -l'

How ever running slackware 12.1 using kernel 2.6.24.5 works (used my other box for 12.1 testing)
I also tried the 12.1 kernel 2.6.24.5 in slackware 12.2 rc1 and then it works.
So it's seems kernel related. (but i'm not experienced enuff to know)

Kernel config 2.6.27.7 http://pastebin.com/m4ba5debe
Kernel config 2.6.24.5 http://pastebin.com/m20a78c4f
dmesg when pluging in the device on 2.6.27.7 http://pastebin.com/m56d5e2e8
dmesg when pluging in the device on 2.6.24.5 running 12.1 http://pastebin.com/m65e4fd04
dmesg when pluging in the device on 2.6.24.5 running current http://pastebin.com/m2ac79d09

My computer is an Compaq Presario 2800
Phone Sony Ericsson W800i 0fce:d028
What other information would be useful?

I searched the mailing list and found http://lkml.org/lkml/2008/9/11/276 which seems releated but there was no answer.

(please cc me on any reply)
Thanks,
Nille