On Sep 29, 6:07 pm, Michael.Coll-Ba... at VerizonWireless.com wrote: > You did not mention the OS, but because you are using > "pathname\editfile.txt", it sounds like you are using an MS OS. From > past experience with various MS OSes, I found that as the number of > files in a directory increases the slower your process runs for each > file. how so?