Hi: I'm Sergio, the original reporter of this bug.
I found that in my laptop, also with Debian SID, everything worked fine, so I decided to do a clean install of my system in my main computer (since the original instalation was several years old and had been migrated over several disks, and also installed from sources and manually removed a lot of libraries), and now filezilla works fine.
So maybe we should close this bug. -- Nos leemos RASTER (Linux user #228804) ras...@rastersoft.com http://www.rastersoft.com