I just noticed, because of an error message that now points to the PHP documentation, that Hosting Matters just upgraded the server my site runs on to PHP 4.3.0. Woo. --with-pear too, which I don't think we had before (now I can try out ITX if I want to
). 4.3.0 has GD included, so I may do funky stuff with graphics soon 
But oops, they didn't compile it with the IMAP libraries, so now my e-mail program doesn't work... time to put in a support ticket...
I also noticed that the use_trans_sid session flag was re-enabled for my site. It turns out it's only changeable at the "PHP_INI_SYSTEM" and "PHP_INI_PERDIR" level, and can't be changed at run time by ini_set, even though the code I used before:
<?php
ini_set('session.use_trans_sid', '0');
?>
seemed to disable it. So I wonder if this is a new restriction on it. Anyway, I disabled it at the .htaccess level by adding this line:
php_flag session.use_trans_sid off
As a side note, aside from the output of PHP's highlight_string() and similar functions not being valid XHTML, their URL rewriting isn't valid either because it doesn't escape the ampersands (&) that are added to URL's to append the PHPSESSID. Though, Mark Pilgrim probably doesn't care anymore 
Grrrrrrrr... You lucky, lucky brainiac!
Especially with GD. Maybe one day i can finally use hostmatters. One project fell through, and i can't give up my $25 per year hosting since it still is great. A lot of features have been given up for price and security, but i still love them. Also, I have nothing else that justifies using hostmatters.com even for that great price for so much quality and features.