Paladin of the Pegasos
Posts: 1468 from 2012/11/10
From: Manchester, UK/GB
I've had screen/system freezes with MUI ScreenMode changes in the past, and I use the same hardware, MacMini 1.5GHz 1GB RAM
Some websites, gobble up RAM, with JavaScript, etc., and then you run out of RAM for OWB, and then anything can happen.
So, I'd think it's something running amok/affecting the stability of your system, rather than the hardware itself, but at this stage, from the details you've given it could be other problems, though I still consider the most likely issue will be that some software is affecting your system's stability.
If you didn't when you bought the system, clean out the heatsink & fan, then I'd do that now, and every so often, as it's quite easy to do so, and keep it out of dusty/fluff gathering zones as clogging up/overheating the CPU can lead to premature death of the CPU, from the information I have acquired over the years.
MacMini 1.5GHz,64MB VRAM, PowerBooks A1138/9 (Model 5,8/9),PowerMac G5 2.3GHz(DP), iMac A1145 2.1GHz 20", all with MorphOS v3.18+,Airport,Bluetooth,A1016 Keyboard,T-RB22 Mouse,DVD-RW-DL,MiniMax,Firewire/USB2 & MacOSX 10.4/5