One of my websites uses Acquia Marina with a block in the "Sidebar last" region.
This block is a list of links to external websites.
Each link is entered as follow:
<a href="http://www.example.com" target="_blank">Example</a>
With the "Full HTML" input format enabled and selected.
It works fine with IE8 but, strangely, in Firefox or Google Chrome (I haven't checked Safari yet), even though they appear in blue as any other link with this theme, nothing happens when cursor is hovering over them and they are not clickable.
In any other region of the theme, all the links work fine whatever the browser.
Anyone has an idea on what's going on? Unfortunately, the site is in off line mode for now, but I can give a temporary login and password to anyone who wants to have a look...