[Plugin: WP Super Cache] Failed to Connect: No Buffer Space Available

I recently upgraded from a shared server to a VPS. Super cache is now giving me this error:

Test your cached website by clicking the test button below.

Fetching http://pleated-jeans.com/ to prime cache: OK

Fetching first copy of http://pleated-jeans.com/: FAILED

Fetching second copy of http://pleated-jeans.com/: FAILED

One or more page requests failed:

Failed to connect to 216.70.83.77: No buffer space available

Fatal error: Cannot use object of type WP_Error as array in /var/www/vhosts/pleated-jeans.com/httpdocs/wp-content/plugins/wp-super-cache/wp-cache.php on line 977

Can someone help me sort this out?

http://wordpress.org/extend/plugins/wp-super-cache/