Thread:Feedback/Can't see comments on Ubuntu 10.10 in FF 3.6.xx/reply (3)

We have a similar issue: a MediaWiki 1.16.0 + Liquid Threads (verzió: 2.0-alpha). We have a simple discussion page with one thread that has 2 comments. There are several users who can see both comments and one that can see only one comment (the last comment he added is not displayed for him). User privileges are all the same, so we don't know what to do. Do you have any idea how to get this working? (Discussion history page shows the last edit as well!)