IBM TLA for Program Temporary Fix.
The acronym is older than you are. I remember it from the 1960's, but it may have been in existence even longer.
[link|http://searchdomino.techtarget.com/sDefinition/0,,sid4_gci214488,00.html|Link.]
The implication of PTF is that some time in a future release, the fix will be made permanent, but perhaps in a different form.
Alex
Men never do evil so completely and cheerfully as when they do it from religious conviction. -- Blaise Pascal (1623-1662)