I do have a line conditioner, and I have an Aspire PSU from Performance-PCs.com. It's funny you mention a bad ground, though, since my house does not have a ground. I have three-wire outlets (that I recently installed so I wouldn't have to buy a bunch of two-to-three prong adapters. lol), but the third prong is not functional. I'm sure I will do something about that someday, since my surge protectors and UPS system all have "ground fault" lights that stay on constantly...but nothing has blown up yet, so I'm not terribly worried right now. I have been living here for almost eight months now without any problems at all. My house was built in 1955 (before three-prong outlets) but, since the builders used high-quality copper wire, I haven't bothered updating the wiring. If the builders had used aluminum wiring, which was much more common (and dangerous) in those days, I would have updated it before I even moved in.