If you are using pidgin with ICQ on any current Linux distribution like Interpid, you may discover that 2.5.5 is not yet available in the official repositories.
For now you will have to stick with pre-built packages or simply get rid of ICQ 😉
http://www.getdeb.net/release.php?id=3960
Here is a source for now, 2.5.5 should be released soon on the interpid and hardy repositories:
- first of all you should remove pidgin and perform apt-get autoremove to uninstall any pidgin dependencies such as pidgin-data and libpurple
- install pidgin-data from the link above
- install libpurple0
- now you can install the pidgin package and you should be free to go 🙂