Ehh ... I am not an advanced user of ubuntu. I ran the second computer on which I have ubuntu too. Firebird installed from the repository without any bugs, everything works beautifully. Something spoiled on the first computer and I do not know how to now clean up. It began when I saw that synaptic have old version of firebird. So, I downloaded the .tar from the firebird page, and I tried to install manually by running the attached script. I received some errors so I decided get back. Only after that I decided to install an older version from the repository but I have dependencies errors when installing packages. I do not know how to unscrew everything now. I cleared cache /apt-get and /tmp directory, but nothing helped. I try again with install.sh script
EDIT: Eureka!!

. The whole cause has been on the version of Linux. I have amd64bit. I tried again to install the version from Firebird page using install.sh. Carefully read error messages. I had an error "error while loading shared libraries: libstdc++.so.5: can not open shared object file: No such file or directory". In Synaptic I found only version libstdc++.so.6 (probably this is the reason of crashed installation from the repository with depending errors). In google I found another person that had the same error message and a 64-bit versions of ubuntu, but there was no information to solve the problem. I search for .DEB packages of libstdc++.so.5 version and installed it (
http://packages.debian.org/lenny/amd64/libstdc++5/download). Now install.sh script installed and executed without any problems. Netstat found Firebird on port 3050, FlameRobin connects to the database. It is too beautiful

. But it cost me a whole Saturday. Aaaa and curiosity. I had a base which I crated on windows. FlameRobin throwing permission error to access to the file. I had to assign the owner to Firebird user (thanks gandergz for information about Firebird user, I quickly connected this problem with your information). I hope that this issue be useful to other users 64-bit computers. Thanks to everyone for help and motivation to solve the problem and sorry for my English.
Regards