I've been experimenting with various "light security" apps, and was giving Threatfire a spin. Overall I was pretty happy with it for the past week or so, until last night. I have a couple *Nix boxes that I use for file servers, and was prepping one for a big upgrade. First thing I do is copy all the files off the thing, just in case the upgrade goes bad. I use TerraCopy for this which is a super-handy little copier, and have never had issues with it in the past. I can basically tell it to copy a few hundred gigs worth of data and tell it to shut down my system when it's done. Which is what I did last night. This morning I fire up Beyond Compare, just to double check that everything is good on the copy.. and it wasn't. Pretty much any file over say 50MB was mangled, usually "short" some data. The entire file never got written to the system. Some other smaller files, not many but more than zero is a problem, were the right size but didn't match MD5 checksums. I was able to reproduce this by copying some bulk data again. Removing Threatfire completely eliminated the problem; zero copy errors as expected. I blasted Threatfire, but I really did like it as it was pretty light and fast. Is this a known issue? Didn't see anything on their FAQ's, wondering if anyone else ran into this and knows of a workaround. I'm guessing some sort of issue between Threatfire and Terracopy (which I've never had problems with any other type of resident scanner), but now I just can't trust the thing, if it's a choice between TerraCopy or Threatfire.. well, buh-bye Threatfire. Thanks for any input.