A colleague of mine has a UK Vodafone-spec Mini 9, running the Dell 3G broadband card. He's been running 10.5.6 but I've also reinstalled and had the problem described below with 10.5.7.
Basically every other time his machine tries to boot up it will end up at the pre-desktop blue screen with a mouse showing, but the mouse will refuse to move and the machine will hang. OR he won't get the mouse at all. Also, if the machine is moved around a lot - balanced on two fingers, for example - VERY occasionally the screen will go completely manic and end up 4:3 format with some sort of corrupt display in the middle (a bit like you'd get with 10.5.7 upgrade and a non-safe boot install immediately after it). It didn't do any of this for me last night, when it was plugged in; it only seems to do it on battery power.
This has me completely baffled. I've now installed Ubuntu on there and it's working fine; I can find no screen corruption at all. And to my knowledge, he hasn't done any dodgy upgrades; it just started doing this a couple of days ago.
What does anyone reckon? Hardware - screen, battery, touchpad? Software? The only, final thing I have to try is that he's running A04 bios, not A05 - so I'm going to upgrade it tonight.
Any thoughts, anyone?