Topic: flashplayer http cache not expiring

I am running Chumby 8 software on an Infocast 8 device, and I'm seeing that many of the widgets are displaying old data. Weather forecasts are stuck reporting the same weather for days, the same with Google News, Woot, and several others. I run the same channel on an Insignia 3.5 device which updates just fine.   These widgets seem to only update on a full reboot.

After SSH'ing into the device, I find that it is keeping caches of the HTTP requests in /mnt/storage/flashplayer.cache/ and that those caches aren't being expired as they should be.

My practical questions: Is there a way to manually expire the HTTP caches?  Is it safe to simply remove files in /mnt/storage/flashplayer.cache/ ? Is there a cache index or lookup tabled that I should also be modifying or removing?

My theoretical question: My understanding is that /mnt/storage is kept on the nand flash.  Wouldn't caches be better kept only in ram memory so we don't wear out the nand flash?