Last modified: 2007-09-10 17:58:26 UTC
Check out this wiki talk page:
Look at the three bottom entries.
Even though they were signed with the traditional "~~~" by a logged in user (me ;) ), the sinebot flagged them as unsigned and autosigned them.
Well firstly, you sign with four tildes ~~~~ not three, and this is really an issue to raise with the bot owner, not here.
This is not something we (the developers or sysadmins) have control over. Please ask the person who controls the bot. If he can't be reached, you may want to ask an English Wikipedia administrator to consider blocking the bot.