Dan Radcliffe apologized to Robbie Coltrane for Phone Prank

Daniel Radcliffe’s tendency to prank his fellow Harry Potter cast-mates often added levity to the set, but there was at least one time when his antics went a little too far.

Reportedly, Robbie Coltrane, who portrayed Hagrid in the films, was once a victim of a prank where the young actor changed the settings on his friend’s phone from English to Turkish. The joke seems harmless enough—except that Coltrane was left unable to make calls!

The infuriated actor had a hard time finding anyone on set who could change the settings of his phone back to English, and Radcliffe was left feeling understandably sheepish about what he had done. Coltrane remembers the event clearly:

Eventually we found a girl in the Harry Potter make-up department who was Turkish Cypriot. She phoned her mum and was chatting away in great detail until they sorted it out. I think Daniel was so upset at what had happened that he wrote me that note...'Dear Mr. Coltrane, I'm sorry I changed your mobile telephone into Turkish...

Have you ever been part of a prank gone too far? Let us know in the comments!

Rowling confirms work on 'Potter' encyclopedia, royalties will go to charity

With the re-launch of J.K. Rowling's website yesterday, the author has also answered a few new questions in her FAQ section.

Most notable is her response to a question fans have wondered ever since the final Potter book was released:

What about the Harry Potter encyclopaedia?

"For a long time I have been promising an encyclopaedia of Harry's world, and I have started work on this now – some of it forms the new content in Pottermore. It is likely to be a time-consuming job, but when finished I shall donate all royalties to charity."

So this indeed confirms that aside from Pottermore, fans will get a deeper look into the Potter world! It is first mention from Rowling herself of actually working on the project.

Rowling's latest work, The Casual Vacancy, will be released on September 27.

MuggleNet Throwback: J.K. Rowling's official site reveals 'Half-Blood Prince' chapter titles

This week's throwback takes us back to October 31, 2004, when the mysterious door was opened on J.K. Rowling's official website. It revealed a new-found treasure for all Potter fans: several chapter titles for Harry Potter and the Half-Blood Prince.

You can revisit the locked door now, flip the time-turner back to the date (10/31/04) and reveal the hidden secrets all over again! Head on over to JKRowling.com and click on the eraser on Jo's desk. We will leave the rest up to you.

If you can't figure out the secret to the locked door, don't worry, we have the instructions for you right here; but try it yourself first.

Do you remember the discussions you had with other Potter fans as to what the chapter titles like 'Spinner's End,' and 'Felix Felicis' could possibly mean? Tell us your story of seeing the chapter titles for the first time in the comments below.

A few changes to JKRowling.com

Happy birthday Snape

Happy Birthday Percy Weasley