As we noted earlier, vsftpd has bugs/new behaviour after Ubuntu 11.10. We are working on fixing that. The new file,
is being tested now. It should be able to install including vsftpd. Please test this as much as you can and send us your results.
additional note on ehcp_yeni.tgz:
ehcp_yeni package has some files missing, since it is a testing version (we removed non-crucial files from it to reduce download&testing time)
copy files from ehcp_latest package: webmail, net2ftp
phpinfo file is remove because of security reasons.