I get the same behavior on Dell Inspiron 6400, with Core2 T7200 CPU, the same as Latitude d820, but I cannot reproduce this behavior on a Dell Latitude e4200 with Core2 U9300 CPU. So I guess this doesn't happen on any Dell, but only for some of their models.
I get the same behavior on Dell Inspiron 6400, with Core2 T7200 CPU, the same as Latitude d820, but I cannot reproduce this behavior on a Dell Latitude e4200 with Core2 U9300 CPU. So I guess this doesn't happen on any Dell, but only for some of their models.