Very odd. I just installed Defraggler and tried running it on a new HD where I've just installed Win7 Pro 64-bit plus my applications. Defraggler reports 38% fragmentation, and Microsoft's Disk Defragmenter reports 0% fragmentation (see attachment). They can't both be correct, and the discrepancy truly is alarming. With a fresh install, I have a hard time believing Defraggler, but 0% doesn't seem right either. Is there a tried and true utility I can run on Win7 to get another opinion?