Comment 4 for bug 582106

I added a screencast showcasing the slowdowns I am dealing with. In this case I was working with a pretty small image (only measuring about 1000x1000px), which I attached as well. CPU load on using the selection tools quickly spiked to ~20% for Pinta. You can see this in the end of the video.

Some additional information on my configuration:

~$ apt-cache policy pinta
pinta:
  Installed: 1.4-0ppa2~precise
  Candidate: 1.4-0ppa2~precise
  Version table:
 *** 1.4-0ppa2~precise 0
        500 http://ppa.launchpad.net/pinta-maintainers/pinta-stable/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status
     1.1-1 0
        500 http://ftp-stud.hs-esslingen.de/ubuntu/ precise/universe amd64 Packages

##Note: This bug appeared both with the latest PPA release and the one provided in the official repositories##

$ uname -a
Linux AcerUBN 3.2.0-36-generic #57-Ubuntu SMP Tue Jan 8 21:44:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise

System specs:

- Core i5 @ 2,66 Ghz
- AMD HD 5650 with FGRLX (Catalyst 12.6)
- 4 GB RAM

Desktop environment:

- LXDE/Openbox

##Note: toggling composition on/off made no difference##

P.S.: Sorry for the delay!