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[Umut Erol Kaçar <1203718@xxxxxxxxxxxxxxxxxx>]

I ran into this problem as well.

Ubuntu 14.04.2 LTS
Intel(R) Core(TM) i7-3520M CPU
16 GB RAM

hud-service is using 24% CPU and 6,9 GiB memory.

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https://bugs.launchpad.net/bugs/1203718

Title:
  hud-service is consuming too much recources

Status in Unity HUD:
  New
Status in hud package in Ubuntu:
  Confirmed

Bug description:
  For a couple of days now (I assume since recent Unity updates), my Laptop is performing more an more poor throughout the day. First 2-3 hours Unity is running smoothly (Dash, HUD, etc.) Afterwards, opening Dash or HUD and even switching workspaces and starting applications becomes very slow. Sometimes I have to restart lightdm from a tty-console or reboot.
  Running "top" in a terminal shows that a process called "hud-service" is consuming up to 60% of CPU and RAM resources.

  My hardware should be perfectly able to cope with 13.04 (Dell Latitude
  E5420, quad-core, 8GB RAM) and was until about two weeks before.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: unity 7.0.0daily13.04.18~13.04-0ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
  Uname: Linux 3.8.0-26-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  Date: Mon Jul 22 13:49:15 2013
  InstallationDate: Installed on 2013-04-25 (87 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)

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