Are you sure that EVERY line is blank? I mean, I could create a file meant to masquerade as a legit file with 20k blank lines and one line with the coding to allow me to grab other files...
As I wrote in my reply:
The contents of the ubbthreads1.php file is the same as the palinode.php file..... basically blank with 20,000+ blank lines.
So, here is the complete contents of that 44KB file:
Line 1:
<?phpLine 20242:
?>