[Bug 1193218] [NEW] [regression] Cache directory disappeared in clean profile

[B Bobo]

Public bug reported:

Made a clean profile in firefox 21 and started firefox.
Browsed launchpad.net and mozilla.org.
Quit firefox and restarted it, browsing launchpad.net and mozilla.org again.
Went to about:cache and was surprised to find none of the entries listed in the disk cache were actually accessible.
The disk cache entries were not accessible because the Cache directory and its contents no longer exist in the profile. They were deleted, i.e. the Cache directory and its subdirectories no longer exist.

I noticed firefox's JS Cache Deleter thread was running at the same time as firefox.
Is there a bug in JSCD that could cause deletion of the Cache directory?

This is in firefox 21.0+build2-0ubuntu0.12.04.3 in Ubuntu 12.04 Precise

Never seen this sort of thing in previous FF versions. Regression? If
you de-tag regression-update, please explain why.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: firefox regression-update

** Summary changed:

- Cache directory disappeared in clean profile
+ [regression] Cache directory disappeared in clean profile

** Description changed:

  Made a clean profile in firefox 21 and started firefox.
  Browsed launchpad.net and mozilla.org.
  Quit firefox and restarted it, browsing launchpad.net and mozilla.org again.
  Went to about:cache and was surprised to find none of the entries listed in the disk cache were actually accessible.
- The disk cache entries were not accessible because the Cache directory and its contents no longer exist in the profile. They were deleted, i.e. the Cache directory and its subdirctories no longer exist.
+ The disk cache entries were not accessible because the Cache directory and its contents no longer exist in the profile. They were deleted, i.e. the Cache directory and its subdirectories no longer exist.
  
  I noticed firefox's JS Cache Deleter thread was running at the same time as firefox.
  Is there a bug in JSCD that could cause deletion of the Cache directory?
  
  This is in firefox 21.0+build2-0ubuntu0.12.04.3 in Ubuntu 12.04 Precise
  
  Never seen this sort of thing in previous FF versions. Regression? If
  you de-tag regression-update, please explain why.

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https://bugs.launchpad.net/bugs/1193218

Title:
  [regression] Cache directory disappeared in clean profile

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