weird mails and messages are sending for all times when module is enabled

Hi!

At first - for the time what I play with this module - it looks realy it will be really great, many thanks for it.

The problem:
Right after I enabled this module, I got 3 emails: Subject "m" email body: "m"

When I change some settings in notification (select allowed content types or allowed vocabularies) I got drupal infomessage that changes were saved + I got 3 info messages on page that: "New message: m"
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The big problem is as I found that this message "New message: m" was shown each of our users who was online in this time when the module was enabled. So it was really missunderstood for them.

But the biggest problem is that for user who saw this drupal info message: "New message: m" - they found that they have a few new private messages in folder "sent" with subject "m", sender for them is "anonymous" and subject of this message is "m". These messages were in users whosw were online and no of them has some notification enabled before.
(included picture nr.3)

Please note that for all time I have this module enabled (5 minutes) I got about 40 mails with subject "m". They come each 2-3 minutes with no dependency on my activity
(included picture nr. 4)

Thanks
Igorik
http://www.somvprahe.sk