Strange URLs in Webmaster Tools. HELP PLS!

[aliosha]

Webmaster tools finds around 30 pages with duplicate meta title. Pages look like this

http://design-floral.ro/9-modele-lumanari-de-botez?http%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525253A%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252F%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252Fdesign-floral_ro%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252F9-modele-lumanari-de-botez%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525253Fp%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525253D2=&p=4

And the original page is http://design-floral.ro/9-modele-lumanari-de-botez?p=4

All 30 URLs open the same page... All active..

Any idea what is wrong??

[Rhobur]

Did you recently install any third party module?