Well if you know your way around the registry you can change some of that stuff. HKEY_CURRENT_USER\Software\Xolox you can change the settings there but its not a good idea for new user to play around with that stuff.... can really stuff up windows.
and to stop a ongoing search right click it and click close and/or there is in tools\preferences\searching\ you can choose to have XoloX Requery so after the search is finished it wont conntinuessly search for that file once xolox connects to a new node.
good luck.