> This is supposed to be new....
If by "that" you mean the invention described in the title - "Automatic Deletion of Temporary Files" - then, no.
Patent titles are as meaningful as book titles: you wouldn't assume that two books entitled "Pirate Adventure" relate the same story, right? It's the same with patents: a completely new type of automobile engine might have the title, "Automobile Engine."
If by "that" you mean the invention described in the independent claim, which is this -
1. A computer-implemented method comprising: selecting a file having a path name in a distributed file system, wherein the file is divided into a plurality of chunks that are distributed among a plurality of servers, wherein each chunk has a modification time indicating when the chunk was last modified, and wherein at least two of the modification times are different; identifying a user profile associated with the file; determining a memory space storage quota usage for the user profile; deriving a file time to live for the file from the path name; determining a weighted file time to live for the file by reducing the file time to live by an offset, where the offset is determined by multiplying the file time to live by a percentage of memory space storage quota used by the user profile; selecting a latest modification time from the modification times of the plurality of chunks; determining that an elapsed time based on the latest modification time is equal to or exceeds the weighted file time to live; and deleting all of the chunks of the file responsive to the determining.
...then presenting that invention as "new" seems legitimate. There are several details in here - dealing with a temporary file as chunks across several file stores, each chunk having a different modification time; and determining the "weighted file time to live" based on the last modification time and the percentage of consumed file quota - that seem completely new.
The author of this Slashdot post appears to have glanced at the claims, reached the conclusion that "basically, it's about deleting temporary files," and posted this rant about how the patent office granted a patent for "deleting temporary files," inspiring yet another wave of diatribes about the patent office based on a faulty assumption. Not surprising - this kind of tilting at windmills, based on factually incorrect interpretations of patents, is a daily occurrence here.