Craft hangs when updating entry I've had this issue for a while now and have never been able to get it solved - even after chatting in Slack about it with some people. Basically whenever I go to update an entry, Craft hangs and locks up Apache. It times out in about 5 minutes or if I manually restart Apache, things go back to normal. The entry is updated after the server restarts so it appears that the database write is successful.

It's becoming a huge problem as I'm finishing up a site for a client and they're needing to put content in. I'm running this on a Google VM and have tried installing it on a fresh server with no luck. I'm running Ubuntu 14.0.3. I'm running other Craft sites on Google and have no issues.

I tried a few steps a while back (I can't remember what exactly), I believe I increased a couple parameters in PHP.ini but I honestly can't remember. I used to be getting the zend_mm_heap_corrupted error but that's gone away now from my Apache error log.

Any help is appreciated. It's getting sort of urgent at this point since my deadline is approaching and entries need to be worked on.

My Apache version is 2.4.7 if that makes any difference.
It turns out that I was running a dev release of PHP 5.6 from a PPA and not the official Ubuntu release. With Brad Bell's help (thank you so much!) I got on the right track to looking into PHP and realized that that was the problem. After purging the PPA and reverting to PHP 5.5.9 on the official Ubuntu repo, the problem seems to have gone away. Hopefully never to return again.

Thanks again, Brad!

EDIT: As I said below, the problem appeared again. It seems to have been solved when I disabled Craft's devMode in my environment variables. I'm not sure what would cause that to be an issue, but devMode is something I can live without for now since the site is near going live. Brad, if you have any insight as to why devMode would be causing the issues, I'd love to hear it :)

Thanks!