[TYPO3-Solr] Solr search form doesn't send query to the solr-server

[tamim]

Hi,

i could connect to my solr-server and also index my sites. I also placed 
a Search Form on a special Search Site. The Problem is that the search 
Form does not show any results at all. Usually the Search Form at least 
delivers a message "Nothing found for "Some-text" ", but not even this 
message is shown.
I looked into the tomcat logs, but there are no entries for send requests.
Usually there are entries like ...

/INFO: [core0] webapp=/solr path=/select 
params={hl.fragsize=200&spellcheck=true&facet=true&facet.mincount=1&qf=title+content+type&hl.simple.pre=<span+class%3D"results-highlight">&hl.fl=content&json.nl=map&spellcheck.collate=true&wt=json&hl=true&rows=10&fl=*,score&debugQuery=true&echoParams=all&facet.sort=count&start=0&q=Test&hl.simple.post=</span>&facet.field=type&fq={!typo3access}-1,0&fq=siteHash:"fc202ea94028a474abccc7f1c51e4296de344b03"+OR+siteHash:"e51458085cc9016b96c9b91a12438b9d77862c32"&fq=type:tt_news+OR+type:pages} 
hits=0 status=0 QTime=6 /

It is weird, because i can actually index all the sites but i cannot 
send any requests to the solr-server.