I can't really report this properly, as I've no idea what causes it, but every so often I'll click on a tab (Or possibly just random objects sometimes) and then it locks up. I can hear loads of error messages popping up, but I can't see any or click anywhere on Contruct 2 and the only way to do anything is to end the process.
It's a bit annoying as I often lose some progress!
I realise this is a slightly useless bug report, but seeing as there's no messages and I'm never doing anything particurly different when it happens there's not much I can do!
And yes, my Graphics Card drivers are up to date =P I'm running Windows 7 64-Bit, and it's a laptop with Nvidia Optimus 540m and Intel HD 3000 graphics cards if that's any help!