Hi, I also observed this behaviour: twinkle: symbol lookup error: twinkle: undefined symbol: _ZThn944_N3ost9ZrtpQueue11sendDataRTPEPKhi This message was produced using libzrtpcpp-0.9-0 version 0.9.2-1. Downgrading this package to 0.9.0-6 makes twinkle work again. I suggest upload a rebuild. Helmut