Search always including location after update

Hello,

I set up a site to have people select just categories and see all listings under that category (the categories are city names and that way companies can say they offer services in multiple cities).

Everything worked perfectly prior to the last update and when I did a search with just the category field on http://canadianroofers.com then it would show all of the listings on the map which fit that category.

Since I updated the plugins however, now when you do a search for just a category it appends the default city as the location (Toronto, the parameters showing are snear=Toronto&sgeo_lat=43.653226&sgeo_lon=-79.38318429999998) How can I get the location specific part of the search removed? All I want to see is every listing for a specific category as it would before the update?

Thanks for your help.

Peter