To prevent indexing of ASPX pages: Go to:

• site settings
• search visibility
• “Never index any ASPX pages on this site”

This must be done for every site and sub-site that you want to prevent indexing of custom pages.

One gotcha i resently rant into with the PDF filter. To search a document library you need to install the iFilter on the SQL server so that SQL Full Text search can pick it up. Happy indexing

I have seen comparisions that show FoxIT iFilter (x64) to be about 5 times faster than the iFilter from adobe. The FoxIT product is about $330us and the Adobe is free. If you anticipate a large number of PDFs needing to be indexed you may want to purchase FoxIT.
FoxIT Software has an updated version of their PDF IFilter that was posted today.
Foxit PDF IFilter (32-bit Windows)
Foxit PDF IFilter (64-bit Windows)
The version history for their IFilter can be found here: http://www.foxitsoftware.com/pdf/ifilter/history.htm