GD error on 4.3.7: fatal libpng error

Hi! I'm not sure if this is the right place to post this, or if this is a bug or something I'm doing wrong. My host recently upgraded to 4.3.7, and since then, GD support for PNG's has been broken. Accessing GD PNG images directly shows the following error message: Fatal error: imagepng(): gd-png: fatal libpng error: Incompatible libpng version in application and library in /home/cookiebe/public_html/manager/media/graphing/panachart.php on line 469 This occurs on a Linux server runnign PHP as an Apache module, with the following compile flags set: './configure' '--with-apxs=/usr/local/apache/bin/apxs' '--with-xml' '--enable-bcmath' '--enable-calendar' '--with-curl' '--with-dom' '--with-dom-xslt' '--with-dom-exslt' '--enable-exif' '--with-swf=/usr/local/flash' '--enable-ftp' '--with-gd' '--with-jpeg-dir=/usr/local' '--with-png-dir=/usr' '--with-xpm-dir=/usr/X11R6' '--with-gettext' '--with-imap' '--with-imap-ssl' '--with-kerberos' '--enable-mbstring' '--enable-mbstr-enc-trans' '--enable-mbregex' '--with-mcrypt' '--with-mhash' '--enable-magic-quotes' '--with-mysql' '--with-openssl' '--enable-discard-path' '--with-pear' '--enable-sockets' '--enable-track-vars' '--with-ttf' '--with-freetype-dir=/usr' '--enable-gd-native-ttf' '--enable-versioning' '--with-xmlrpc' '--with-zlib' On my Windows server at home, also running PH 4.3.7, it works fine. Have I done something wrong or have I found a bug (which I then need to report in the bug tracker)? Thanks, Alex