re: Warning: Cannot modify header information – headers already

So now I’m suddenly getting this warning, can’t login to the admin backend anymore. Read NUMEROUS posts on this forum about this warning and simply cannot figure this thing out. I’ve checked the files for whitespace, in this case it’s complaining about wp-config.php on line 1 and pluggable.php.

Here’s a question – Can these files get modified without the date changing when looking at them on the FTP? In other words, I’m looking at all the file dates and none of them have been modified for months.. This is driving me made, already spent a good 6 hours reading forums and trying stuff……Wordpress is starting to feel like Joomla =(