udev under EL 5.7 is still posting diagnostics during boot-up (this 
first emerged several 5.x previous).  I have read the man page for udev, 
and have done a cat -v * | less as well as a cat -v */* | less in 
/var/log as root but have not found what is displayed on the screen 
during boot nor other udev diagnostics.

pcsd is one of the udev applications that is flagged during boot-up .
There was a notice from TUV (on one of the bug lists, as I recall) about 
this general issue claiming it to be a harmless issue and thus not 
fixed.  EL 6 does not display this behavior.

Where does udev log such diagnostics?

Where are the udev configuration files that can be edited to attempt to 
correct the issue?

Yasha Karant