You should upgrade. There have been several Joomfish related fixes in later releases, although not mentioned in the changelog. First, try disabling JReviews query cache and see if that helps.
Hmm, I dissabled JReviews query cache, but it doesn't help me.
I have an Idea, is possible this way? In module mod_jreviews_fields is Field name (i.e. jr_fieldname), for my first language I have jr_country, is necessary to have only this, or load something like this: jr_joomfish_country? Could I load it form the joomfish mysql?