HansMuenchen, I have responded to your bug on the board, the fix is attached here:
http://ezirc.org/forum/projectattach...attachmentid=1
pJIRC support has been dropped due to the numerous errors that had been coming up, and I was not able to respond to such problems. An AJAX client also allows users to run it no matter what OS they run on, if they don't like the ad, google chrome or firefox with adblock works fine.
The uncached template is cached in 2.1.1, the release scheduled for Friday (or earlier if I find there's no more bugs to fix in the meantime)
As far as the cURL error, will go into some debugging and find out what is going on.