Some repetition on pot files

Hi, these are some repetition i've found on pot files:

agents.po: User agents -- User Agents

actions.po: messages 80 and 88 differs only by the final period

root.po:
Recent pages -- Recent Pages
Start the installation -- Start the installation process

Bernard Paquesfrom nearby-an-airport Associate, 8405 posts	on Dec. 18 2006 Turned to `User Agents` in the `agents` module...
Bernard Paquesfrom nearby-an-airport Associate, 8405 posts	on Dec. 18 2006 A final '.' has been added to the message in the `actions` module
Bernard Paquesfrom nearby-an-airport Associate, 8405 posts	on Dec. 18 2006 Also, `setup.php` has been changed based on your feed-back
Fw_crocodile	inspired from Bernard on Dec. 18 2006 Bernard: ok, but i didn't say anything about setup.php
Bernard Paquesfrom nearby-an-airport Associate, 8405 posts	inspired from fw_crocodile on Dec. 21 2006 Fw_crocodile: strings of `setup.php` are placed in `root.mo`, which you flagged as faulty...
Fw_crocodile	inspired from Bernard on Dec. 21 2006 Opps
Fw_crocodile	inspired from fw_crocodile on Feb. 5 2007 All comments appears two time in comments.pot
Bernard Paquesfrom nearby-an-airport Associate, 8405 posts	inspired from fw_crocodile on Feb. 5 2007 Fw_crocodile: Another upper/lower case variation. I have fixed `comments/check.php` for the next version.
Fw_crocodile	inspired from Bernard on Feb. 5 2007 Bernard: the sentence `Do not change modification date of the related page` sometimes end with a dot some times not.
Fw_crocodile	inspired from Bernard on Feb. 13 2007 In file control.pot: * string 459 Section Title * string 507 Section title