Hello
OK, you are right. There was a miss-comunication with the user. When he changed the Device, the new one just showed “Thank you for your vote”. So I guess he entered his vote, but the site did not reload and kept showing the some Poll, which lead him to hit vote again.
So the only problem was a wrong setting in the Poll setting, to not redirect after vote.
Thank you for your help.
FYI: I guess thats a new ticket: searching a term in log and then changing pages adds an “/'” on both sides of the terms, leading to not be able to search somehing further than the first page.
Sorting also only applies to the current page, which might be un purpose, but can be a problem when searching.