[Milhouse]

Here are my overclocking settings. I have found if I go higher than this I will get lockups. Especially on sdram_freq and core_freq. Unless I am still too high?

You may need to bump over_voltage_sdram up a notch or two if you are struggling to hit sdram_freq=450. Also, over_voltage=2 may not be sufficient. You should try higher voltages (both of them) and then scale one back in turn until you hit instability, then go back up one notch. Repeat for the other voltage.

A good stress-test is the script in my sig, it will max out the Core block and give your Pi a pretty good work out (ie. thrashing). You can run it from a remote PC too (Windows, Linux etc.), which can make life a bit easier.

Also on another note. I get lockups with the newest Milhouse Build #0703. It was doing it before but I wasn't really paying attention to it. It seems to be related to standby settings. If it sits long enough to go into standby (screen goes dark) instead of going into standby my Pi will freeze up. I see that this has been discussed recently. Maybe there is something I need to disable? Disable standby if I am using Milhouse test builds? I think in my settings I have the screen go dark when the Pi sits for a while.

Are you able to ping the Pi? Connect over ssh? What are your Power Saving settings - you definitely have Suspend and not Shutdown selected? If you want to disable Suspend, just turn off the Shutdown Timer. The screensaver has nothing to do with suspending the Pi, or placing it in Standby.