Cache forever

Halo! Congrats for a very usefull plugin.

I have small but importqnt problem with the cache of this plugin and I found no answer in the forum. I use a lot of inline google spreadaheet viewer widgets on the same page of my site and thats probably making it too slow to load. Data is loaded from google spreqsheets.
For this I tried using expire_in=”0″ and deleting the cache every time I update data. Deleting all caches of my website with total cache does not delete the data so that it can be refreshed.

I noticed that when I save a widget with expire_in=”0″ than its imposible to change the expiration time to another value at a later time and its imposible to delete the cached data of that widget.

Question 1: Whats the location of the plugins cache so I can find it and delete it manualy?

Question 2: My host sais there are no caches server-side. Where could the data be saved than?

This only happens when I set expiration time to 0. Any other setting is reversible.

The page I need help with: [log in to see the link]