hey all... this morning my girlfriend left here iBook on my desk with a sticker on it saying 'this happened, can you fix it?' Looks pretty sick to me... the machine was completely frozen, no mouse response. Last night the screen completely blacked out, restarting did the job. Anyone know what's going on here? Will an OS format / reinstall help? here's the pic... http://www.registernoise.co.uk/screen.jpg scary no?