500 - Internal Server Error

[NOYB]

Received a couple of 500 - Internal Server Errors this morning.

First was on the Traffic Graphs page while streaming Olympics video.

Second was while logging in to Web GUI with no other activity.

System log shows nothing related about any issues.
Just a bunch of dhclient: RENEW and Creating resolv.conf
And php: /index.php: Successful login for user 'Admin' from: 192.168.1.34

[tzlwin]

I got this too on the Dashboard.