I have the latest Pro installed from your August 2011 email (v3.141592).
As I am now spending a few hundred dollars a month on Google Translate's API (billing enabled) for a relatively large site's 23 languages, one of my biggest concerns is how your config.php/translate.php file will deal with the /cache/ and its contents folder when the expiry period is reached.
The expiry period set in my config.php is the default "define('CACHE_TIME', 365*24*60*60); //1 year"
(Question 1) Will GTRANSLATE remove the entire /cache/ folder within a year or does it look at INDIVIDUAL files dates when determining when to delete a cache file individually when the 365*24*60*60 period is reached?
If GTRANSLATE for some reason deletes the /cache/ folder, I cannot afford to pay Google again for all the lost month's translated files (which will be thousands of US Dollars). I do backup the /cache/ folder but this is difficult sometimes with the thousands of files inside the folder. If you have a easy way to backup the /cache/ folder, please do share this with us. For now, I just need to make sure first how your expiry code works.
(Question 2) If I increase the 365*24*60*60 period to say two years, will all my existing /cache/ files still stay intact and will not be effected by any increase of the cache exp time?