We just had a bug report from Aaron Smith at UT Austin.  The symptom is that the "load" comman was taking 30 seconds to complete on his FLASH dataset, which should never happen for FLASH.

After asking him to profile the code, he produced the following profile:

It seems that the recent changes to the Tipsy frontend which allow it to autodetect binary outputs have made it so in some cases non-tipsy data is loaded off disk.

I'm not sure about the best way to handle this, which is why I'm writing to the list rather than issuing a PR.

-Nathan