error log messages

I got these messages on my error log when I looked tonight. I took out my website name to post it on here. Would anyone be able to tell me what the fix is for this or will the fixes be supplied in a future update?

[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 43
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 48
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 53
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 58
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 63
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 68
[Fri Oct 26 09:16:16 2012] [error] [client 168.144.251.95] PHP Deprecated: Assigning the return value of new by reference is deprecated in /var/www/vhosts/ /httpdocs/wp-content/plugins/w3-total-cache/lib/W3/Cache.php on line 74

http://wordpress.org/extend/plugins/w3-total-cache/