Problems with login, rerender the login form

[wiiix]

Hi, I'm using Roundcube 1.0. When i'm trying log in, the login form appears once again and then I can log in. Its annoying. Does anyone got same problem?

In logs I found only some info that user has been successfully logged in, two times with different session id. (first request is re-render the login form and second, a correct log in.

[SKaero]

Are you using any plugins?