I think I am getting a similar issue for the last couple months.  It appears that when using your API and executing this function Utility.SearchContactByEmail(...) I am getting a timeout after processing about 10 records in my batch cycling through 1 by 1.  Then I wait at least 30+ minutes later and another 10 will go through.  This code was developed back in 2013 without any change since and uses the API utility run time Version v2.0.50727.   I saw on some of the threads that Constant Contact needs to restart some server(s) and or service(s) to get this going again... If so can someone at Constant Contact do that or tell me what needs to be done to eliminate this issue. ... View more