On Wednesday, May 7th (04:31:47 GMT), the 4,000,000th Triddler was solved by poohbear. The solved Triddler was Handbag.

Almost made it:
scottcoble who solved the 3,999,999th puzzle and Cystem_Phailure who solved the 4,000,001st.

The former records are:
The 500,000th puzzle was solved on August 7th, 2005, by Q_commotion
The 1,000,000th puzzle was solved on April 15th, 2006, by ildiko_f
The 1,500,000th puzzle was solved on October 13th, 2006, by pikkukarhu
The 2,000,000th puzzle was solved on March 15th, 2007, by Cheza
The 2,500,000th puzzle was solved on July 17th, 2007, by ndewaele2
The 3,000,000th puzzle was solved on November 5th, 2007, by celu
The 3,500,000th puzzle was solved on February 14th, 2008, by boepsy
The 4,000,000th puzzle was solved on May 7th, 2008, by poohbear