Koha 3.22.03 package install on Debian 8. The OPAC doesn't display the username when you are logged in. on the right side at the top it displays "Welcome, Search history [x] Log out". Then it displays "Hello, Click here if you're not" followed by the list of items I have checked out. It repeats everything in that block from Hello down for a total of 75 times. Here's what was recorded in the logs: [Mon Feb 29 11:03:21.755007 2016] [cgi:error] [pid 14261] [client 192.168.1.198:50204] AH01215: [Mon Feb 29 11:03:21 2016] opac-user.pl: CGI::param called in list context from package C4::Auth line 400, this can lead to vulnerabilities. See the warning in "Fetching the value or values of a single named parameter" at /usr/share/perl5/CGI.pm line 436., referer: http://opac.example.org/cgi-bin/koha/opac-main.pl?logout.x=1 [Mon Feb 29 11:03:21.793550 2016] [cgi:error] [pid 14261] [client 192.168.1.198:50204] AH01215: [Mon Feb 29 11:03:21 2016] opac-user.pl: Use of uninitialized value in concatenation (.) or string at /usr/share/koha/lib/C4/Auth.pm line 506., referer: http://opac.example.org/cgi-bin/koha/opac-main.pl?logout.x=1 [Mon Feb 29 11:03:21.849343 2016] [cgi:error] [pid 14261] [client 192.168.1.198:50204] AH01215: [Mon Feb 29 11:03:21 2016] opac-user.pl: CGI::param called in list context from package main line 387, this can lead to vulnerabilities. See the warning in "Fetching the value or values of a single named parameter" at /usr/share/perl5/CGI.pm line 436., referer: http://opac.example.org/cgi-bin/koha/opac-main.pl?logout.x=1 When I try to place a hold from the OPAC I get: Confirm holds for: () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () () Along with other things that should be there. The errors from this are: [Mon Feb 29 11:43:33.198962 2016] [cgi:error] [pid 14901] [client 192.168.1.198:50439] AH01215: [Mon Feb 29 11:43:33 2016] opac-reserve.pl: CGI::param called in list context from package C4::Auth line 400, this can lead to vulnerabilities. See the warning in "Fetching the value or values of a single named parameter" at /usr/share/perl5/CGI.pm line 436., referer: http://opac.example.org/cgi-bin/koha/opac-search.pl?q=Apocalypse+Cow [Mon Feb 29 11:43:33.216618 2016] [cgi:error] [pid 14901] [client 192.168.1.198:50439] AH01215: [Mon Feb 29 11:43:33 2016] opac-reserve.pl: Use of uninitialized value in concatenation (.) or string at /usr/share/koha/lib/C4/Auth.pm line 506., referer: http://opac.example.org/cgi-bin/koha/opac-search.pl?q=Apocalypse+Cow -- Tim McMahon Technical Services West Liberty Public Library