ezsystems/ezpublish — pull request #352 by quochuy (2012-06-12 15:51:24+00:00)
Title: MAGICK_THREAD_LIMIT=1 for shared hosting

As discussed here:
http://share.ez.no/forums/setup-design/no-more-image-variations#comment75944

Adding this environment variable set to 1, this allows convert to run successfully