Header from WebService call to http://jira.atlassian.com/rpc/soap/jirasoapservice-v2 responds with

<HTTPHeaders>
<date>Sun, 12 Nov 2006 02:19:07 GMT</date>
<server>Apache/2.0.52 (Red Hat)</server>
<keep-alive>timeout=15, max=100</keep-alive>
<connection>Keep-Alive</connection>
<transfer-encoding>chunked</transfer-encoding>
<content-type>text/plain; charset=UTF-8</content-type>
</HTTPHeaders>

This causes a soap client to complain that the content type is supposed to be text/xml

Seems that this is the same issue as JRA-10743