"Invalid token" while asking question

[CROSP]

Hi to all .
I have problems with asking question about any product. If click "ask question" ,the form opens, but when i try to send , "Invalid token"  appears.
I have tried to use .htaccess but nothing had happend.
Maybe someone had such problem .
Please help to solve it .
Thx in advance.

[jenkinhill]

http://forum.virtuemart.net/index.php?topic=79799.0

This is a well known Jooml issue related apparently to browser session or cache.

http://www.ostraining.com/support-forum/joomla-support/message-invalid-token/
http://forum.joomla.org/viewtopic.php?t=765525   - and a lot of others.

[CROSP]

Thank u for answer. I have solved promblem turning on Cache in control panel (Site-> Settings->System ) Standart cache . It may be some difference because i have translated into English.