jQuery Update Errors in IE and Firefox

Greetings,

I've been noticing an error in Firefox for some time now, but have paid it little mind. It also crops up in IE 7/8 in a slightly different manner, but I believe it is the same problem. I found an issue for jQuery Update for Drupal 6 which I believe is related - http://drupal.org/node/888406

In Firefox I am seeing:

uncaught exception: Syntax error, unrecognized expression: [href=/]

In IE I am seeing:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 1.1.4322)
Timestamp: Tue, 5 Jun 2012 21:16:57 UTC


Message: Exception thrown and not caught
Line: 871
Char: 15
Code: 0
URI: sites/all/modules/jquery_update/replace/jquery/1.5/jquery.js?v=1.5.2

This was an issue in both 7.2 stable and dev releases.