I had this same issue and tracked it down to IE9. In my case IE9 was first requesting a page in Quirks mode and then midway through requesting resources it would switch to standards mode which caused it to abort all currently active requests and request all resources again. The aborted requests were sometimes for wicket served resources like wicket-ajax-jquery.js which caused wicket to log the referenced stack. Adding a header with x-ua-compatible set to IE=9 fixed the issue by making sure IE9 starts in standards mode.
On Fri, Aug 24, 2012 at 6:11 AM, dpmihai <dpmi...@yahoo.com> wrote: > We also have this problem after migrating to 1.5. Everything seems to work > ok, but the logs get full with this error. We did not find a solution to > this. > > > > -- > View this message in context: > http://apache-wicket.1842946.n4.nabble.com/after-migration-to-1-5-I-get-java-lang-IllegalStateException-Header-was-already-written-to-response-tp4651455p4651475.html > Sent from the Users forum mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > >
