I love Apple. I've loved Apple for 20 years. Even though the Apple has changed colors I still bleed in seven. That being said I've had more problems lately than ever. 10.3 screwed a few of my drives (needed third party software to make them useable and NO they weren't firewire drives). In addition my 2,500 dollar Apple branded LCD refused to startup several times after 10.3.2. Also my networking has gone haywire. I've lost DNS (still had it on a machine behind my box which serves as the router so it wasn't my connection) - tried with multiple accounts - only a reboot seemed to fix the problem. I thought I was having the same issue on my other box a few hours later but instead it was still my box - file sharing refused to start and while connection sharing said it started a quick close and opening of the system preferences would show it as off. Again a restart fixed the problems. Each of these problems has only manifested itself once but if you have an older system upgraded over time - you might want to be careful. Of course YMMV and you should ALWAYS backup before upgrading/updating.

For Reference - minor problems all solved by a reboot but please this isn't OS9. I shouldn't have to reboot my computer to make it run properly. Okay, okay so it's probably just me and my ancient system that has followed me from DP3 up to 10.3 but still ... :(