Comment 50 for bug 624877

This patch to lucid's current dpkg package disables the use of sync() and backports the performance fix for fsync() on ext4 that was introduced in 1.15.8.7

This should resolve the problem for people getting "Task blocked" errors without impacting the performance on ext4, it requires more testing, interested parties can get the package from my ppa :

https://launchpad.net/~mjeanson/+archive/ppa/+sourcepub/2598206/+listing-archive-extra