Alright, so I'm not really sure what "safe" running temperatures are, so I just want to make sure the ammobox I'm running isn't about to explode.
Temperatures: Motherboard 38 °C (100 °F) CPU (Celeron-S, Tualitin, 1.1 GHz) 42 °C (108 °F) Aux 23 °C (73 °F) (not sure what this is, video card, maybe?) Maxtor 6Y080P0 39 °C (102 °F)
Those look fine. Generally it's only when your temperatures start creeping into the 60-70c zone that you may have an airflow problem, and even then it might just be the result of too many heat-producing components. (Presc(hot) P4, anyone?)
Any higher than that, though, and you're risking damage to the CPU and/or chipset. (Some video cards, however, can withstand up to 100c before dying.)
That was just after playing defcon (I know, not intensive, but with this suckass computer, it was laggin up, so it was getting a workout), and just checked again, temps have dropped ~1-2°F, so I think this comp is in good shape as far as heat removal goes.
Then you have nothing to worry about. :)