alex-tallman on "[Plugin: W3 Total Cache] Freeze until Purge from Cloud Front finished."

Hello. First of all, thank you for your great job, W3 Total Cache makes me really happy.
However we run into following issue after recent update from 0.9.2.4 to 0.9.2.8 :
We are using Amazon Cloud Front CDN, and we constantly need to purge files from it.
We have CDN type set to Origin Pull / Mirror.
After update, while purge is processed, Wordpress becomes unavailable. Server still serves request to other scripts and static files, but Wordpress seems to be "frozen".
Is this now expected behaviour or we have some kind of problem there?

http://wordpress.org/extend/plugins/w3-total-cache/