vb.org Archive - Ext Links "Bookmarks" Being Crawled and 404, 100k Errors Google

On Nov 23rd I upgraded my vbulletin from 4.1.7 I think to 4.1.8 and on the 24th my traffic dropped, well logging into Google Webmaster Tools I see that on that date my site started showing 100,000 pages not found, 404 crawl errors. I looked at the URLs that are generating this error and they are all coming from my forum. What they look like is this:

It appears that what is happening is either a submit/ or faves/ or /bookmark/ are being appended to these urls that should be outgoing links and not spidered by Google are being shown as actual pages of my site and have caused a decrease in my ranking and indexing> (seems like it) and an increase in the 404 errors (obviously)

https://vborg.vbsupport.ru/external/2012/01/15.png

Does anyone know what is on these pages of my forum that would be generating this and how I can fix this problem? Thanks

X vBulletin 3.8.12 by vBS Debug Information
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Hooks Called:

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X vBulletin 3.8.12 by vBS Debug Information
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Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (1)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
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