Hello.
I am trying to install steam on my 64bit Ubuntu PC 13.10. The tech specs are:
i5 3570k
4GB RAM
AMD Radeon HD 7870 (Proprietary Drivers.)
Wine Version: wine-1.4.1 (Output from Wine --Version)
No other Apps installed
Wine configuration unedited.

I have tried installing Steam with:
Crossover
Play on Linux
and the standard installing with wine.

The install is successful with no errors and i get into the login screen, I log in and it goes to steam guard, I put in the code that was sent to me. If the code is entered correctly it goes to the working screen then crashes. If entered incorrectly it cycles back as it normally would if run on a windows PC.

My end goal is to install my copy of Civ V (plus DLC). Which i understand to function in wine.

I have uploaded the Backtrace file from the error log (compressed so as it would upload to the forum)

Steam linux backtrace.txt.tar.gz

I have tried all the suggestions in the "read this before posting" including updating to wine 1.6(+) and 1.5.2.
Thank you for the help.