whenever i try to send a private message i get this:

"The following errors occurred with your submission:

1. This forum requires that you wait 60 seconds between sending private messages. Please try again in 60 seconds"
2. even if havent send any message before, and if i wait more than 60 seconds (even 5 minutes), still i get same message.
3. i guess there is a flaw in the system. can this be fixed?
4. thanks.

now these numbers 1 to 4 i did not type them. what is going on?