I have the same problem with my UMTS pcmcia modem : Novatel Wireless Merlin U530
I can connect, but the data transfer rate is very very low and I have a lot of errors : here is an example for a 30 seconds connection (sorry it's in french): ppp0 Lien encap:Protocole Point-à-Point inet adr:10.15.150.149 P-t-P:212.234.96.27 Masque:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 Packets reçus:21 erreurs:2 :0 overruns:0 frame:0 TX packets:25 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:3 Octets reçus:2107 (2.0 KiB) Octets transmis:3239 (3.1 KiB) I HAD NOT these problems with breezy, it happens only since I upgraded do Dapper... -- High error rate on UMTS modem https://launchpad.net/bugs/45928 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs