Problem with Signature

Hello,my problem is kinda complicated,for a reason member's signatures is visible only on a topic's LAST post ,have tried everything need seriously help

Signatures are always used only from the post, which is created after activation. Older posts obtain the signature is not in arrears.
Have I understood you correctly.

Please use the search to find out more.

here is an example now,when i activate signatures in some post it is visible and some not, example:in http://www.fairytailgreek.com/t142p30-topic#3215 6 last posts Mirage's signature is <<For me there is no peace...no rest>> but in some post it doesn't appear