CB solve one time other time unable to solve

baba

@Sven

why CB not solve same type captcha all time. some time it solve some time says unable to solve this captcha sorry.

EX--

Dokuwiki
unable to solve this captcha sorry--

http://product-bio.ru/doku.php?id=wiki:syntax_en&do=register
http://www.shinken-monitoring.org/wiki/wiki/syntax?do=register
http://www.3d-network.org/wiki:syntax?do=register

solved--
http://www.okasha.ojuba.org/wiki/wiki/syntax?do=register

Webpronews
unable to solve this captcha sorry --
http://directory.pukt.com/submit.html
http://directory.forumbase.org/submit.html
solved-
http://directory.tunecircle.com/submit.html
http://directory.directorytaste.com/submit.html

Basti guestbook complex
solved--
http://moggysshop.com/infusions/guest_book/guest_book.php?new_message=1
unable to solve this captcha sorry--
http://www.freunde-des-frohsinns.de/infusions/guest_book/guest_book.php?new_message=1

like above their are lots of platform that CB solve one time other type unable to solve this captcha sorry.
i am worried because i have scraped large list and imported in SER and all is unique domain. if CB unable to solve lot's of time i am missing lots of successlist.

Sven

Thats normal. Some captchas are harder to "decode" and read than others.

baba

it means if i want more success then i should increase captcha retry because i don't want to loss successful site.
or

their are any setting for increasing site 2 or 3 times retry?