Problems with vBulletin 3.x, VBSEO and PHP 5.3.6?

Earlier today I upgraded my server to PHP 5.3.6 (in preparation for WordPress 3.2, which will require PHP 5.2.4 or newer). After upgrading, both of my vBulletin 3.x + VBSEO forums went down with the following errors:

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 49

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 101

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 105

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 113

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 124

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 128

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 136

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 205

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/init.php on line 383

Deprecated: Assigning the return value of new by reference is deprecated in /home/getgamer/public_html/forum/includes/class_core.php on line 2529

I've sense reverted back to PHP 5.2.17 and the forums are working again. I understand that it's warning me about deprecated functions, but can I simply turn off these warnings, or is there a compatibility issue?

vbseo 3.6 is fully 5.3 compatible.

The errors you list are from vb, not vbseo.

I believe only 3.8.5+ are php 5.3 compatible, and you are running 3.8.1, which is not.

Thanks, Brian. I figured as much but appreciate your prompt response. I've also posted over at vBulletin.com but no response there.

Probably time to upgrade vBulletin.