I've been observing the _exact_ same thing on my Pi 2 with Raspbian and latest firmware, nginx+php-fpm and a Noir camera. SSH login will hang at Last login line without ever giving a prompt randomly, usually after several hours (24ish). Startd happening with last raspbian and firmware updates (not s...

Thanks everyone, the issue I was having was solved several days ago with the february apt-upgrade of Raspbian and/or a recent update available for Mathematica package - it's been working solidly since. Cheers! PS: just for info: In[1]:= $Version Out[1]= "10.0 for Linux ARM (32-bit) (February 3, 2015...

I wouldn't like to close this case just yet ;) I have had the exact same problem occurring on my RPi2. I believe it triggered after I updated my Raspbian January 2015 firmware with rpi-update. Wolfram in console would work but not Mathematica and I had not messed around with its files. Purging and r...