Black screen with dual monitors (10.9.3)

I have been experiencing a problem with my Macbook Pro (latest version) when connecting it to a dual monitor.

I usually click on the trackpad to wake the computer immediately after it has gone into sleep mode but ever since I have started using dual monitors the computer doesn't wake instantly.

I will see the outline of my mouse but the background remains black.

Here is what the console shows after the sleep-wake up

What have I tried:

To get around this problem I have just changed the sleep time on my computer but that is only a temporary solution.

I also contacted Apple support who suggested a PRAM reset but unfortunately that didn't work either.

Interestingly my roommate has the same problem with his Mac (both are on 10.9.3) so I am wondering if this might be an issue with Apple's dual monitor support and not a hardware issue.

Any ideas?

10.9.4 purports to fix sleep-wake issues. I know on my rMBP (pre-Haswell) I'd have a similar issue after disconnecting from a Thunderbolt display, and it's been resolved since upgrading.