I have a fugitsu 40gb hdd as a slave to a Maxtor 60gb, running win 98(Lite) / win2k / XP home / Suse Linux 8.2 professional on various partitions. The slave is partioned a few times and holds my backups, paging files, photoshop scratch files. and a few other bits and pieces.
Every now and again it makes a slight clicking noise and the whole system pauses for maybe 5/6 seconds. This has only started in the last week or so. The Maxtor is about 14 months old; the fugitsu maybe a year more than that.
I have just taken out the hdd to blow (with compressed air) any dust off it and since doing that it has not caused any problem. It was warm, but not particularly so - at least no warmer than any other I have ever handled.
I don't know that it ever has overheated though.
I will have to have a look for a new hdd when finances are up to it I suppose - but for now it has nothing vital on it. I backup to CD-R automatically each evening.