can't install any package

[thesilverline]

Before I thought this problem was only with firebird. But now I found it is associated with all the installlations. I tried installing tomcat and then jetty , but all the time I got this error:
E: firebird2.1-server-common: subprocess post-installation script returned error exit status 1
E: firebird2.1-super: dependency problems - leaving unconfigured
Seems like I can't install any application any more.
Please, teach me how to removed this dependency problem.

[oldos2er]

Check System, Administration, Software Sources to see if you have all repositories enabled.

[thesilverline]

well it's fine now. I ran
dpkd-reconfigure --all
which resolved all the dependencies messes and then I re-installed.
Thanks to all though.