Personally I do not like IE[/quote]
Why do people always have to say that? As if it would change anything if IE was your favourite browser.
4 months later we have Piwik 1.4 and since Anthon has posted the corrected piwik.js, everything really works fine. In fact, I consider Piwik 1.4 one of the mjor improvements (and therefore one of the major achievements of the developers) since the Piwik project started.
What most people (including me, if you look at some of my older posts) forget, is to carefully read and understand the update notes that come along with every new version of Piwik. It’s not just cliking two hyperlinks and then wait until Piwik says something like “Update successful”.
Especially if you use Piwik in a business environment carefully reading the update instructions is the most crucial part involved in an update. Most of the time an update also involves “clearing the browser cache”.
Just as a recommendation: You should clear the cache of every browser you use to access the Piwik backend after the update has finished successfully. If clearing the browser cache might cause trouble with other websites you regularly access, just use another browser to access Piwik. I for example use Firefox as my everyday browser, but Chrome for things like Piwik, Nagios monitoring, database administration etc.