Thank you, I will keep an eye on it and gather the necessary info if it happens again. As of right now, I have not had a problem since yesterday around noon, but will monitor the situation.
As a side note, when my Web GUI freezes in my situation, I don't get a "502 Bad Gateway" error, the web page doesn't load and the cursor just keeps spinning. That doesn't mean it's not the same issue though.
Thanks again, jimp.