Those look like files that mysql server made while in the process of completing an operation. Would it hurt to leave them a little while to see if the operation is still in process? As you stopped the last step manually (assuming just by hitting stop from your browser) the process attached to them MIGHT be done, but there is an equal probability that you stopped the PHP process but the MySQL process is still going. Deleting these files, if that is true, is a bad idea.
Leave them for a while if you can.
![[Linked Image from navaho.infopop.cc]](http://navaho.infopop.cc/progress.gif)
