500 Mb of ram should be plenty, so I don't think that's your issue. I've had bad ram in the past and it didn't cause this problem for me, but that's not saying that couldn't be the problem. I think it might be best for Tom to take a look at this and see what he thinks. He probably knows where it's failing at a minimum so it might help figure out why. My suggestion would be to try adding about half the icons in the directory and see if it loads. If it does, remove those ones and put in the other half. If it still loads, then it's not a single corrupt icon file, it has to do with the quantity of icons for some reason. You may need to reduce this from half to a third, a quarter, etc. to find a quantity that will load and then use the procedure above.