Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I installed avast to try to get to the source of ongoing problems and found this

15:14:25: An error occured in avast! engine: The file is a decompression bomb
15:14:25: Couldn't delete file '/home/simon/Desktop/Ubuntu /lubuntu-12.04-desktop-powerpc.iso/casper/filesystem.squashfs'.
share|improve this question
Avast is no longer supported for Linux so you shouldn't expect it to work... – Alvar Nov 22 '13 at 12:07

That file is part of the Lubuntu image /home/simon/Desktop/Ubuntu/lubuntu-12.04-desktop-powerpc.iso, which Avast apparently treats as an archive and thus searches for viruses.

The filesystem.squashfs in that image is not harmful, cannot and will not cause damage to your system, deleting it will not fix whatever problems you are having.

Should you still want to get rid of it, delete the Lubuntu image.

Update: squashfs is a compressed file system, which might share some similarities with a decompression bomb, but the file is there for a reason. Without it, the Lubuntu image would not work. Again, it will not damage your PC or system in any way.

share|improve this answer
so it's not a bomb? – Frenchman Nov 21 '13 at 22:47

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.