Hi There are reports of difficulties with some modem drivers and Karmic Koala I have a good working set-up using Ubuntu 9.04 with a Motorola SM56 Data Fax Modem and slamr which the system detects as: Modem = /dev/ttySL0 The relevant section of scanmodem shows: For candidate modem in: 03:01.0 0703 Modem: Motorola SM56 Data Fax Modem Primary device ID: 1057:3052 Support type needed or chipset: slamr Should I expect problems if I upgrade to Ubuntu 9.10? Thanks Trevor