When i try to move from the cart, to the first step of the checkout process, i get this error:

(it takes a while to load fully, and they appear one at a time, over a minute or two)

Code:
Warning: fsockopen(): unable to connect to www.ups.com:80 in /home/content/d/e/s/designertoybox/html/includes/classes/http_client.php on line 319

Warning: fsockopen(): unable to connect to production.shippingapis.com:80 in /home/content/d/e/s/designertoybox/html/includes/classes/http_client.php on line 319

Warning: fsockopen(): unable to connect to production.shippingapis.com:80 in /home/content/d/e/s/designertoybox/html/includes/classes/http_client.php on line 319

Warning: fsockopen(): unable to connect to production.shippingapis.com:80 in /home/content/d/e/s/designertoybox/html/includes/classes/http_client.php on line 319

Warning: fsockopen(): unable to connect to production.shippingapis.com:80 in /home/content/d/e/s/designertoybox/html/includes/classes/http_client.php on line 319
2013 Lost connection to MySQL server during query2006 MySQL server has gone away
Warning: Unknown(): A session is active. You cannot change the session module's ini settings at this time. in Unknown on line 0

i recently got a new ip (my servers were migrated by my hosting provider) would this be why? how can i fix it?