This is a conflict with your theme, maybe the jQuery in your theme has some bugs that are coming up with jQuery 1.8.3.
The first error is coming from a theme file, fastblog.js:
Uncaught Error: Syntax error, unrecognized expression: h9,h3,h2,
I don’t see a reference to “h9” tags in the script, but maybe check the theme settings or something, it will have problems targeting h9 tags since those don’t exist.
The second error is from page.js, which doesn’t seem to be part of the theme, maybe it is being added by a plugin, or maybe in the header.php of your theme.
First thing I would do is deactivate your other plugins and confirm that none of them is causing this problem, like the page.js error, try to narrow down where that is coming from.
Second, in your theme I would try temporarily disabling page.js in the header or functions file and test it to see if the slideshow works when that script isn’t running.