PHP Problem and sudden White Screens

Gallery URL (optional but very useful): Here.
Gallery version: 2.2.3
Apache version: 1.3.37
PHP version (don't just say PHP 4, please):4.4.6
Graphics Toolkit:ImageMagik
Operating system: Vista
Web browser/version (if applicable): IE

Hello all, I'm using the most current release of G2 with the X_Treme theme as of yesterday. Everything was working fine until just about an hour or so. Now I get blank pages and with 'buffered' maintenence mode I get: "PHP Warning: Cannot modify header information - headers already sent by (output started at /home/gameshow/public_html/buddywalk/gallery2/config.php:1) in /home/gameshow/public_html/buddywalk/gallery2/modules/core/classes/GalleryPhpVm.class on line 142". How might I fix this? I did briefly get bad links and 404 pages when I tried to click on anything. The site is above.

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Fancy casket, my ass. I plan to slide in sideways with a Guinness in
one hand and my plasma remote firmly in the other.