Ok, here's my problem:
blog was working allright, then I installed wp-cache and problems started
I kept having this error
Warning: Cannot modify header information - headers already sent by (output started at /home/xxxxxxxx/public_html/wp-config.php:1) in /home/xxxxxxxx/public_html/wp-includes/pluggable.php on line 391
I uninstalled all plugins. Nothing. I updated to 2.3.
Now I have 2.3, and this error keeps popping up when I try to post, or when I access from http://www.xxxxx.com instead of http://xxxxx.com
I have checked my wp-config.php and there arent any blanks in the first line, I have already uploaded a fresh version of the file, and nothing.
I have also noticed that the wp-config.php file changes size after I upload it...
Please please help me