Dazed:

The swf file is a shockwave flash file..... If it remains on your system it will be in your temporary internet files.

The ff*.* files are automatically created by a program called Fast Find which is a Windows program that indexes your folders so that files can be found more quickly. Frankly it really isn't worth running it and I disable it. It usually reside in the startup folder, just delete it. It consumes more resources on a minute to minute basis than the benefit it provides.

Hope this helps