I have a 512mb stick of Samsung pc333 ddram. For a round of benchmarking, i upped the speeds to 2-2-2-6. Afterwards i turned them to the default 2-3-3-6 agian, but the machine is suddenly going tarribly slow (that black winxp screen with the green loading thing stays about 5 secs instead of less than 1) and even froze once. dxdiag tells me i still have 512mb, any tips? If its broken, do you think i will be able to return it? eg can they see i ran it at 2-2-2-6?