A few weeks ago I blogged about the continuing saga of memory upgrades for my 15″ Powerbook: to summarise, it’s really picky and third party memory doesn’t always work.

Touch wood, the problem seems to have been solved: the nice people at Kingston have replaced the last lot of chips with a new pair, and so far today the PB’s been running fine with nary a trace of Kernel Panics or other nasties. For what it’s worth, if you’re planning to upgrade your 15″ PB then the product number of the happy chips is KTA-PBG4333/512.

Update, 1 December

So far, so good. The PowerBook’s been churning away for 24 hours now – I’ve been really hammering it – and I’ve had one kernel panic, which may well be due to the ridiculous amount of beta software on the machine. Waking from sleep is working all right, and everything seems relatively hunky dory. The only worry I do have is that when I switch the PB on, before the Apple logo appears I see an icon of a spanner with a question mark. I’m assuming that’s some kind of system message, but I haven’t encountered it before. Does anyone more knowledgeable than me know what it is? Do I need to reset PRAM and VRAM, and other things with lots of initials? Any advice appreciated…