I built the most recent kdenlive and mlt from the repositories today and it isn't working right. It is taking a very long time (over 15 minutes!) for the UI to show up after I launch kdenvlive.
After spending some time with gdb it appears kdenlive is stuck in a loop that starts at line 268 in initeffects.cpp. The loop goes through 318 iterations. The first 66 iterations happen very fast but the remainder are very slow with about 4 seconds per iteration.
I run ubuntu 10.10 on a 2.4GHz Core 2 duo machine with 3 GB ram and kdenlive used to run fine before now.
Is anybody else having the same problem?