The idea of using strace was a good one. I did that too, and the last thing ktorrent tried to access was /proc/sys/crypto/fips_enabled<br>google shows this is used by libgcrypt and indeed my libgcrypt was not updated.<br>So I updated it to 1.5.0-3, and it fixed the problem, ktorrent can now start normally again !<br>
Thanks for the idea, it was half of the job ! ;-)<br><br>