GoPHP5 or enough to engage in nonsense

Link to gophp5.org a couple of times already slipped here. A little in Russian:

Despite the fact that critical security bug fixes for the PHP 4.4 branch will be issued before August 8, 2008, a number of popular open source projects written in PHP have declared that all support for this branch is completely discontinued in their projects.

The GoPHP5 campaign is being held to encourage the transition to the PHP 5 branch, which still has not gained its popularity, despite the complete cessation of the development of PHP 4. The initiative has been joined by projects such as Drupal, phpBB, IceBB, MyBB, PEAR, phpMyAdmin, phpPgAdmin, Symfony , Typo3 and WordPress. All versions of the projects that participated in the campaign, released after February 5, will require the installation of PHP 5.2 for their work.
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For example, on web servers in the .ru zone, with mod_php active, the number of installations of the PHP4 version is twice as large as PHP5.

It is difficult to assess this initiative unequivocally - personally, I still have the feeling that php5 is not ready for full use, but somewhere in the depths I understand that it is already quite stable. Apparently it's just a habit.

Therefore, I leave php4 where everything has been debugged for a long time and works, and I use php5 if necessary where the situation requires it (new classes in php5, which have no analogues on the quad, etc.).

What do you do?

UPD: I forgot the link to the source - www.opennet.ru/opennews/art.shtml?num=13993