For Win XP users

SYMPTOMS
You may experience either of the following symptoms:
1394 devices do not enumerate when plugged into the 1394 bus.
1394 devices can disappear from the 1394 bus when other 1394 devices are plugged into the 1394 bus.
CAUSE
The 1394 OHCI host controller driver contains a problem that sometimes prevents stable enumeration because it cannot acquire a consistent gap count across all nodes.

h**p://support.microsoft.com/default.aspx?scid=kb;en-us;Q329256

h**p://download.microsoft.com/download/whistler/Patch/Q329256/WXP/EN-US/q329256_WXP_SP2_x86_ENU.exe