Petr,
Somewhere along the lines with updated libraries on my Debian Sid box, CQRlog fails to start with the splash screen being simply a white rectangle and the program goes no further. There is a Debian bug report on the libcairo package which CQRlog links to and as it was causing text corruption in other programs I downgraded it. I noticed that libpangocairo is linked by CQRlog so I downgraded the libpango package as well. I still get the startup hang. Even starting from a terminal window shows no output and 'ldd' shows no missing libraries. I'm stumped.
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