I've solved the issue by changing the URL rewriting to folder based.

My users have issue while clicking on the new message button and then trying to scroll up or down. The Safari mobile is stuck where the anchor is set in the url.

for example
for http://punbb.informer.com/forums/viewto … 2121#p2121
the user is stuck at the #2121 he cannot scroll down or up.

Is there anyway to avoid this ?

Ok so that's a feature.

No way or advices to code this simply by myself ?

New messages I've read are not updated if I visit my forum from 2 different device.

Example:

I am connected to the forum using a device named device1. I have new messages on four different topics, I read them all, I can even optionally click "Mark all forum posts as read"

then I connect via device2. The same topic have new unread messages but no one has posted anything since my navigation on a device1.

In fact the forum acts as if the date of last visit depended on the device.

Someone else with this trouble in 1.4.2 ?