Manamedia-
Did you make modifications to your htaccess file to support the slideshow functionality? You've got to add:
RewriteRule ^([^/]+)/slideshow/?$ index.php?album=$1&view=Slideshow [L,QSA]
To your htaccess. You also have to make some modifications to your template-functions.php to correct a bug in the mod_rewrite functionality per Trisweb:
if (isset($zpitems[1]) && $zpitems[1] != 'slideshow')
$req_image = $zpitems[1];
It needs to be added at about line 47 of the code, right below:
if (isset($zpitems[0]) && $zpitems[0] != 'page')
$req_album = $zpitems[0];
As it stands, just installation of the theme, without these modifications, the slideshow won't work properly, as the index.php isn't interpreting the slideshow linkages properly.
I think the original Q/A regarding this issue is somewhere on the forums. Look for "thinkdreams" and you should be able to trawl through my posts to find the original work Skwid and I did with Trisweb's help.
To answer the IE query, well, suffice to say I'm a hardcore firefox user. IE makes me cringe with incompatibility. I copied a lot of the code from the Stopdesign theme, and the Stopdesign theme has issues of its own with IE. So, unfortunately, I never took the time to modify it to work properly in both browsers. I know that's not much help, but Skwid and I didn't think to code in some cross-browser compatibility.