Thanks very much for upgrading this plugin!
Though I think there is a bug in the plugin, similar to the bug tintin had in his plugin zFrame. Please have a look in this thread for more information: viewtopic.php?f=90&t=45421
In short: with the plugin installed I get maximum CPU usage by browsing through the catalog. The algorithm which rebuild the preview images is caught in a loop and causes the CPU overload. If you need more information then please let me know! Also you may contact tintin to ask for his solution sice he fixed the bug in zFrame, maybe the cause is the same.