[Spinner]

Since I joined this forum the other day, I noticed many things unusual:
1. Everytime I log in, my profile data are inconsistent at times, e.g., I have posted 2 replies but only 1 is shown. When I search my username, the second post becomes missing. I thought that it was deleted for some reasons,
2. I made my first post at the "General Chat" section, after submitting the thread, I cannot view it at this particular button, but on the second column "last post". When there will come another new topic, my thread disappears (this shouldn't be the case since both threads are just made "today" and yesteday's thread are still there) and I have to use the "search" of my username in order for me to reread it and to post my reply,
3. This evening's browsing, the second post finally appeared but I still use the search button in order for me to view the thread.
4. Lastly, this is my second thread and third post, but there is a statement above, that says that I never posted on this site.

Administrators please shed us light on this matter? Did I miss something important? Or, the site (don't be shy b/c I and others want to understand) needs upgrading/maintenance?