"I also have problems with lots of ppp0 rx errors when I use the 3G card and I think this may be due or contributed to by the ACPI code. My workaround, to reduce the rx errors, is to disable the ACPI with the kernel parameter acpi=off. I have two menu items in my grub's menu.lst file to either boot kernel 2.6.13-ck1 with or without ACPI."
I'll try this (I still don't know how to disable ACPI), and keep you advised.
Maybe i've found something here :
http:// www.timberwolf. ukfsn.org/ debian- orange- 3g.html
"I also have problems with lots of ppp0 rx errors when I use the 3G card and I think this may be due or contributed to by the ACPI code. My workaround, to reduce the rx errors, is to disable the ACPI with the kernel parameter acpi=off. I have two menu items in my grub's menu.lst file to either boot kernel 2.6.13-ck1 with or without ACPI."
I'll try this (I still don't know how to disable ACPI), and keep you advised.