Christian:
I ran permissions repair before and after installing the 10.4.9 update. This did not prevent the crash I mentioned. Oddly enough, Disk Utility repairs exactly the same permissions every time I run it, even if nothing has happened between running it, rebooting the computer and running it again. This was a bug in one of the earlier incarnations of OS 10.4 but reappeared in 10.4.8 and is still present in 10.4.9 (if it is a bug and not a symptom of imminent disaster). It seems to have appeared (or at least I first noticed it) after installation of Altiverb 6.0.5 - - but I have no idea if there is any relationship there. In any case, to prevent total disaster - - and accompanying work and psychological meltdown phenomena - - I do always maintain recently updated clones of my startup drive and store 2 of the three clones offsite at any given time.
I ran permissions repair before and after installing the 10.4.9 update. This did not prevent the crash I mentioned. Oddly enough, Disk Utility repairs exactly the same permissions every time I run it, even if nothing has happened between running it, rebooting the computer and running it again. This was a bug in one of the earlier incarnations of OS 10.4 but reappeared in 10.4.8 and is still present in 10.4.9 (if it is a bug and not a symptom of imminent disaster). It seems to have appeared (or at least I first noticed it) after installation of Altiverb 6.0.5 - - but I have no idea if there is any relationship there. In any case, to prevent total disaster - - and accompanying work and psychological meltdown phenomena - - I do always maintain recently updated clones of my startup drive and store 2 of the three clones offsite at any given time.