Hi all! This was already figured out. It was because of the server being bloated because of the opac-error.log. There's this weird crawler from Russia that takes up a considerable amount in the log= http://www.abuseipdb.com/check/188.143.232.41 [Fri May 29 07:59:33.658328 2015] [cgi:error] [pid 3686] [client 188.143.232.41:44932] AH01215: [Fri May 29 07:59:33 2015] opac-suggestions.pl: Use of uninitialized value $borrowernumber in n$ [Fri May 29 07:59:33.658414 2015] [cgi:error] [pid 3686] [client 188.143.232.41:44932] AH01215: [Fri May 29 07:59:33 2015] opac-suggestions.pl: Use of uninitialized value $borrowernumber in n$ [Fri May 29 07:59:33.658484 2015] [cgi:error] [pid 3686] [client 188.143.232.41:44932] AH01215: [Fri May 29 07:59:33 2015] opac-suggestions.pl: Use of uninitialized value $borrowernumber in n$ I don't know if it's related with the error - that since the server is bloated it can not even be accessed. Anyway: the koha version is 3.18, debian package, and installed in Amazon free AWS' Ubuntu. I know the server was optimized following this guideline: http://wiki.koha-community.org/wiki/Koha_Tuning_Guide. In relation to this post, did anybody in the Koha community experienced such weird web crawlers. Thanks and cheers! -- View this message in context: http://koha.1045719.n5.nabble.com/Help-Software-Error-tp5842000p5842197.html Sent from the Koha-general mailing list archive at Nabble.com.