Speaking of icons...

[RAMd®d]

...I've noticed that with some version of 10.6, some of the icons of files/apps that I download often are horribly reproduced like some kind of aliasing nightmare with a measure of jagitis thrown in, or just plain invisible.

A restart cures this, but still- what's going on?

[Chakravartin]

Dunno.

It might be helpful if you'd take a screenshot and post it.