Installed 32-bit version, imported everything of significance. No freeze anymore. So that's that.
If you can be bothered I'd still like to hear what was causing the problem. That's a pretty please with sugar on top too. I hate loose ends.
@rseiler - that is a 64-bit you were using?
Going to give it another shoot by re-installing the x64 ver. Will check back tomorrow, this is not what I had planned this evening
Thanks for giving a hand my Opera comrade.