Three and a half hours
An hour and a half to get in.
About ten minutes later, voted, but before the vote could be confirmed, the system crashed.
An hour and a half later, the system came up. Voted again, but before the first half of the vote could be confirmed, the terminal crashed.
Twenty minutes later, vote canceled and moved polling stations.
Ten minutes later finished.
They have said that they will extend the voting hours. I suggest strongly that if you are a Likud member and you plan to vote, you should get there early. There are no black panthers, but someone doesn't seem to want Yerushalmim (at least) to vote.