Yup, 1.2.6 is now out (and is still just primarily a bug fix drop for 1.2),  and the events handling functionality is 103% faster.  But wait, that’s just the headline:

• CSS Selectors are 13% faster
• .offset() is 21% faster
• The DImensions plugin is now part of the core
• toggle() can now accept more functions
• attr() has had an overhaul
• You can now unbind bound toggle() and one() functions
• .index() supports jQuery collections
• jQuery.makeArray can convert ANYTHING into an array
• beforeSend() can cancel AJAX calls
• You can now define your own animation speeds with the jQuery.fx.speeds object

For more information please see the release notes.