Today my connection down. I've tried connect again with wvdial (normal user) and get no carrier. Very weird! Previous days my connection sound ok. But when I use wvdial with root user and get success. I restart my system with pci=noacpi boot parameter and get success. I've tried and I get the same problem to Ubuntu and Slackware. I've used the last A.Chentov patch (det2.diff)