SP2 FireWire problems on laptop

We have a FireWire problem with our new IBM laptops thay are preinstalled with
XP SP2. The problem is that the connection to the scanners we produce gets
reset
during data transfer. Afterwards the connection is lost. We have observed
the same problem with an external harddisk.
All device are able to install and function in a limited extend , but are a
short period of operation they fail during data transfer.

We have observed the following:
When using SP2 with an Adaptec AWF-1430A card the above problem occurs.
When installing the SP1 drivers with that card everything works fine.
Furthermore, if we use the Adaptec 1430A card with SP2 everything works fine.
However, the 1430A card is discontinued and replaced by the 1430 card. All
other
cards we have tried also fail to run on SP2, whereas the SP1 drivers seem to
work fine.

Adaptec support has directed us to MS support claiming that you are
responsible for developing the drivers for their 1394 PCMCIA cards.