Hi,
I'm using moodle to guide some students in a final project of their graduation, and we are currently using the forum and the chat.
After We close the first session today, the chat session did´nt come to the saved sessions list... I take a look around in all the configurations, groups (no groups in this course anymore).. and nothing, then my old php blood come up to work...
[begin of the techie comments] 
I think the last for in the report.php, its not taking care of the situation, when we have only one session, and the last one also... please take a look at the changes that I made ... don´t know if this is the purpose .. dont show the last one ... or the active one.
anyway, if the change heslps ...
1. add a new condition after the for, to check if there are any sessionusers to show, and
2. take care when show to use the Slasttime as the starttime in the label and in the links
ps. I took a look at the last versions in the download area,
and all are almost the same, about this issue
Hope it helps