The new :visible logic introduced in 1.3.2 doesn't work correctly for hidden table rows in IE7, and probably IE6. Haven't tested IE8.

The issue is that IE still reports a >0 offsetWidth for the rows, only the offsetHeight is ==0. I'll attach a simple HTML page that demonstrates the problem.

I think the fix would be:

Index: src/selector.js
===================================================================
--- src/selector.js	(revision 6253)
+++ src/selector.js	(working copy)
@@ -958,7 +958,7 @@
 };
 
 Sizzle.selectors.filters.visible = function(elem){
-	return elem.offsetWidth > 0 || elem.offsetHeight > 0;
+	return elem.offsetWidth > 0 && elem.offsetHeight > 0;
 };
 
 Sizzle.selectors.filters.animated = function(elem){