Can't login to wp-admin

Hi,

I’m having a problem with one of my blogs: everytime I try to login, it appears a message informing that the password is wrong. However – and here’s the strangest thing -, I’m 100% sure that the password is right, I even logged in with this same password 2 days ago.

I use the exact same plugins in all my blogs and this is only happening on this one. Does anyone have an idea about what’s going on?

Regards