[support] forum issue in drupal 7

I am relatively new to drupal, and this is the first time I am trying to setup a forum. I am using the drupal 7 release from Dec 1st, and I followed the forum setup documentation (http://drupal.org/node/796472).

My issue is:

In the list of forum topics, the topic list is not displayed properly. This is how it looks like:

<span thmr="thmr_62"><a href="/druptest/testtopic">&lt;span thmr=&quot;thmr_32&quot;&gt;&lt;a href=&quot;/druptest/testtopic&quot;&gt;&amp;lt;span thmr=&amp;quot;thmr_7&amp;quot;&amp;gt;&amp;lt;a href=&amp;quot;/druptest/testtopic&amp;quot;&amp;gt;testtopic&amp;lt;/a&amp;gt;&amp;lt;/span&amp;gt;&lt;/a&gt;&lt;/span&gt;</a></span> By ursula 40 years 11 months ago        0       n/a Normal topic

<span thmr="thmr_70"><a href="/druptest/new-topic">&lt;span thmr=&quot;thmr_40&quot;&gt;&lt;a href=&quot;/druptest/new-topic&quot;&gt;&amp;lt;span thmr=&amp;quot;thmr_15&amp;quot;&amp;gt;&amp;lt;a href=&amp;quot;/druptest/new-topic&amp;quot;&amp;gt;new topic&amp;lt;/a&amp;gt;&amp;lt;/span&amp;gt;&lt;/a&gt;&lt;/span&gt;</a></span> By kwickly 40 years 11 months ago

Additionally to the tags instead of just "testtopic" (liked), it shows that I posted this 40 years and 11 months ago. When checking the posting directly, the date is correct, also the date on my server is correct.

First I thought it is an issue with the theme I was using, but after changing themes twice (now at the default Bartik 7.0-rc1), it looks like the problem is somewhere else.

Any ideas?

Ursula