This bug was fixed in the package software-center - 5.2.7

---------------
software-center (5.2.7) precise-proposed; urgency=low

  * lp:~mvo/software-center/oem-descriptor-in-user-agent-5.2:
    - include the oem-channel descriptor in the custom user agent
      string (LP: #1042749)
  * lp:~mvo/software-center/auto-fill-email-for-login:
    - allow auto-fill of the email in login.ubuntu.com if
      we have it (LP: #1042279)
  * lp:~mvo/software-center/fix-memleak-5.2:
    - fix two memory leaks when the cache is re-opened after
      a package has been installed/removed (LP: #1003466)
  * lp:~mvo/software-center/region-whitelist-5.2:
    - fix missing region whitelist support that is used by
      the software-center-agent (LP: #1006570)
  * lp:~mvo/software-center/downloader-fix-race839462-again-5.2:
    - fix a race condition in the SimpleFileDownloader when the file
      is downloaded but the signal did not get delivered yet by the
      gtk event loop (LP: #1055441)
 -- Michael Vogt <[email protected]>   Wed, 26 Sep 2012 09:39:43 +0200

** Changed in: software-center (Ubuntu Precise)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1003466

Title:
  Software Center Memory/Processor bug

Status in “software-center” package in Ubuntu:
  Fix Released
Status in “software-center” source package in Precise:
  Fix Released

Bug description:
  Bug Description:
  Software Centers memory usage increases the more applications you install, to 
monitor this effect I am going to do a single For Purchase install and the an 
run with 7 For Purchase apps and attach the logs to this bug.

  Then a single repo app and then several repo apps.

  OS:
  64bit Precise

  USC Version:
  5.2.1

  Steps To Reproduce:
  1. Open USC install an app.
  2. Click on All software once app 1 has installed
  3. Install another app
  4. Click on All Software once app 2 has installed
  5. install another app and so on
  6. monitor the memory used at each point ( I used ldtp's 
startlog('path/to/log.file') startprocessmonitor('software-center') then when 
finished stopprocessmonitor('software-center') stoplog()

  Expected Results:
  I expect the memory usage to not increase more than a set amount per app 
install.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: software-center 5.2.1
  ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
  Uname: Linux 3.2.0-24-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: amd64
  Date: Wed May 23 15:32:24 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-center
  UpgradeStatus: No upgrade log present (probably fresh install)

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