FYI: POST for those who are running in circles like me.
I received my Toshiba 17.3" P875 last week.
First, if you are struggling with staying connected on your wireless internet. There exists some known issues with WIN 8 and the wireless network adapter inside this laptop. Supposedly this will be addressed in the WIN 8.1 update. After looking at all the drivers/updates on Toshiba's website, everything is up to date with the most recent versions available for this Laptop.
DDR RAM!! Don't flip-out like I did ( I have not opened a new laptop in a few years ) The Ram slots accessed from the back are Empty. The 8 GB ram installed on this model are under the keyboard. Yes, you have to pop out the entire keyboard to upgrade these two slots to 16 GB (8 GB ea) plus the other two on the back (8GB ea) to get the full 32GB installed.
Although I have not done it, I think going to the 64 bit Unbuntu is probably a good idea, since WIN 8 without a touch screen is a pian int the Arse!