Quick question: On an old machine I've used ever since the old OS9 days, I'm noticing that I've got lots of invisible files spread all through out the hard drive. At the root level, on my desktop, and in lots of directories. Most of them have creation and modification dates that are years old. And many of them have cryptic names that make no sense to me. What the heck are these, and would it be safe to trash them? I'm not talking about the typical OSX files, but ones with long names like .vykldFEhjhrLfnwewo and such. I'm just worried that they may be disk-based authorization files for some software I've got. Any advice?