Directory comparison filters

[MSpagni]

Together with others, I have the following filters:

• :*\System Volume Information\*
• :*\RECYCLER\*
• :*\$RECYCLE.BIN\*

but when I perform a comparison I can see the files in the recycle bin and I also receive messages sayng

Could not open file 'H:\System Volume Information\IndexerVolumeGuid' to read.: Permission denied.

and

Could not open file 'H:\System Volume Information\MountPointManagerRemoteDatabase' to read: Permission denied.

Same results even if I add "Exclude items with attributes HS".

What I'm doing wrong?
(N.B. Windows XP 32)