Try viewing any page that uses Mollom to protect against spam, eg a page with comments. It can be in any SS site including:
Right now no comments page on any SS site will load - it will just wait forever before eventually timing out. It doesn't matter what browser you are using or what version of SS - if your comments use Mollom, then that can't be seen by anybody.
I think this one needs an urgent patch! If Mollom is down, so is your site.
It is because if it cannot find a server, it gets stuck in a infinite loop. You can see the discussion on the mailing list - http://groups.google.com/group/silverstripe-dev/browse_thread/thread/827543801d029669. An update to the module will be released next week as soon as we can.
As a side effect, every time someone requests a comments page that calls Mollom and fails, a 50 Mb file called core.xxxx is created inside your sapphire folder. Very quickly, your web hosting capacity will be exceeded. If you are like us, it will then kill your email if it shares the account.
MollomServer is the name of one of the MySQL tables. You'll need to launch PHPMyAdmin or something similar, then delete the records whose Ip address starts with 88.
If this is too scary, you can comment out the SpamProtectorManager line in your _config.php file. This means spam will get through and you are going to have to manually delete it as it comes in, but at least your comment pages will work.
I expect SS to have a fix for this with the next week or so, if that helps to decide what to do.