I have problems with USB-ISDN port from Stollmann(german's company). At start it works correctly, and after few minutes it works slower and slower. When I close connection and try to connect again, sometimes it's slower then before, sometimes not, but the situation recur.I did do everything what is written in this server. Update BIOS (MB Kinetiz 7), reinstall Windows, changed settings in BIOS... everything. But still I have sharing IRQ. I'm not sure, if the ACPI must be disable or not. Can somebody help me, please ???