Safari 3.1 not displaying Spry submenu correctly

Question

I am redesigning a site and have placed a Horizontal Spry
menu at the top of the page. Some of the options in the menu have a
sub menu with some of the options in one of the sub menus having
their own sub menu. I have tested this in IE 7, Opera, FireFox and
Safari 3.1 and it works perfectly in all except for Safari 3.1. In
Safari 3.1 the sub menus fly out horizontally instead of dropping
down vertically as it should. Has anyone else had this problem? If
so does anyone know if it is a bug in Safari 3.1 and if so is there
a fix or a hack? Any help would be appreciated.
Unfortunately I am not at the moment able to put up a live
page for you to see this in action but I will put a copy of my Spry
CSS at the bottom of this post.
I guess if it wasn’t for the fact that some of the
options in one of the sub menus, having their own sub menu I could
leave it as it usable by flying out horizontally, but when the
second sub menu flies out it covers up the rest of the options in
the first sub menu.
Thanks.
@charset "UTF-8";
/* SpryMenuBarHorizontal.css - Revision: Spry Preview Release
1.4 */
/* Copyright (c) 2006. Adobe Systems Incorporated. All rights
reserved. */
LAYOUT INFORMATION: describes box model, positioning,
z-order
/* The outermost container of the Menu Bar, an auto width box
with no margin or padding */
ul.MenuBarHorizontal
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
cursor: default;
width: auto;
/* Set the active Menu Bar with this class, currently setting
z-index to accomodate IE rendering bug:
http://therealcrisp.xs4all.nl/meuk/IE-zindexbug.html
ul.MenuBarActive
z-index: 1000;
/* Menu item containers, position children relative to this
container and are a fixed width */
ul.MenuBarHorizontal li
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
position: relative;
text-align: left;
cursor: pointer;
width: auto;
float: left;
white-space:nowrap
/* Submenus should appear below their parent (top: 0) with a
higher z-index, but they are initially off the left side of the
screen (-1000em) */
ul.MenuBarHorizontal ul
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
z-index: 1020;
cursor: default;
position: absolute;
left: -1000em;
float:none
background-color:transparent;
/* Submenu that is showing with class designation
MenuBarSubmenuVisible, we set left to auto so it comes onto the
screen below its parent menu item */
ul.MenuBarHorizontal ul.MenuBarSubmenuVisible
left: auto;
/* Menu item containers are same fixed width as parent */
ul.MenuBarHorizontal ul li
width: 8.2em;
/* Submenus should appear slightly overlapping to the right
(95%) and up (-5%) */
ul.MenuBarHorizontal ul ul
position: absolute;
margin: -5% 0 0 95%;
/* Submenu that is showing with class designation
MenuBarSubmenuVisible, we set left to 0 so it comes onto the screen
ul.MenuBarHorizontal ul.MenuBarSubmenuVisible
ul.MenuBarSubmenuVisible
left: auto;
top: 0;
DESIGN INFORMATION: describes color scheme, borders, fonts
/* Submenu containers have borders on all sides */
ul.MenuBarHorizontal ul
border: 1px solid #CCC;
/* Menu items are a light gray block with padding and no text
decoration */
ul.MenuBarHorizontal a
display: block;
cursor: pointer;
background-color: #234778;
color: #FFFFFF;
text-decoration: none;
padding-top: 0.1em;
padding-right: 0.75em;
padding-bottom: 0.1em;
padding-left: 0.75em;
/* Menu items that have mouse over or focus have a blue
background and white text */
ul.MenuBarHorizontal a:hover, ul.MenuBarHorizontal a:focus
background-color: #33C;
color: #FFF;
/* Menu items that are open with submenus are set to
MenuBarItemHover with a blue background and white text */
ul.MenuBarHorizontal a.MenuBarItemHover, ul.MenuBarHorizontal
a.MenuBarItemSubmenuHover, ul.MenuBarHorizontal
a.MenuBarSubmenuVisible
background-color: #33C;
color: #FFF;
SUBMENU INDICATION: styles if there is a submenu under a
given menu item
/* Menu items that have a submenu have the class designation
MenuBarItemSubmenu and are set to use a background image positioned
on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal a.MenuBarItemSubmenu
background-image: url(SpryMenuBarDown.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
/* Menu items that have a submenu have the class designation
MenuBarItemSubmenu and are set to use a background image positioned
on the far left (95%) and centered vertically (50%) */
ul.MenuBarHorizontal ul a.MenuBarItemSubmenu
background-image: url(SpryMenuBarRight.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
/* Menu items that are open with submenus have the class
designation MenuBarItemSubmenuHover and are set to use a "hover"
background image positioned on the far left (95%) and centered
vertically (50%) */
ul.MenuBarHorizontal a.MenuBarItemSubmenuHover
background-image: url(SpryMenuBarDownHover.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
/* Menu items that are open with submenus have the class
designation MenuBarItemSubmenuHover and are set to use a "hover"
background image positioned on the far left (95%) and centered
vertically (50%) */
ul.MenuBarHorizontal ul a.MenuBarItemSubmenuHover
background-image: url(SpryMenuBarRightHover.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
BROWSER HACKS: the hacks below should not be changed unless
you are an expert
/* HACK FOR IE: to make sure the sub menus show above form
controls, we underlay each submenu with an iframe */
ul.MenuBarHorizontal iframe
position: absolute;
z-index: 1010;
/* HACK FOR IE: to stabilize appearance of menu items; the
slash in float is to keep IE 5.0 from parsing */
@media screen, projection
ul.MenuBarHorizontal li.MenuBarItemIE
display: inline;
f\loat: left;
background: #FFF;

Answer 1

As extra info on this topic - I did an archive reinstall of 10.5.2 and Safari was working fine.
Performed a software update which installed 6 packages and upgraded the OS to 10.5.5 and Safari is once again crapped in an identical manner to before.
It would seem to be a problem with an OS update.
Can anyone else verify and/or provide a fix