2012-10-15 12:12:37,774 http-8091-20 WARN anonymous 732x86437x1 - 138.203.144.49 /sr/jira.issueviews:searchrequest-xml/temp/SearchRequest.xml auth.trustedapps.filter.TrustedApplicationFilterAuthenticator Failed to login trusted application: confluence:6775045 due to: com.atlassian.security.auth.trustedapps.CertificateTooOldException: Certificate too old. Application: confluence:6775045 Certificate Created: Mon Oct 15 12:12:27 CEST 2012 Timeout: 10000
2012-10-15 12:12:54,753 http-8091-20 WARN anonymous 732x86472x1 - 138.203.144.49 /sr/jira.issueviews:searchrequest-xml/temp/SearchRequest.xml auth.trustedapps.filter.TrustedApplicationFilterAuthenticator Failed to login trusted application: confluence:6775045 due to: com.atlassian.security.auth.trustedapps.CertificateTooOldException: Certificate too old. Application: confluence:6775045 Certificate Created: Mon Oct 15 12:12:41 CEST 2012 Timeout: 10000
2012-10-15 12:13:28,809 http-8091-20 WARN anonymous 733x86473x1 - 138.203.144.49 /sr/jira.issueviews:searchrequest-xml/temp/SearchRequest.xml auth.trustedapps.filter.TrustedApplicationFilterAuthenticator Failed to login trusted application: confluence:6775045 due to: com.atlassian.security.auth.trustedapps.CertificateTooOldException: Certificate too old. Application: confluence:6775045 Certificate Created: Mon Oct 15 12:13:14 CEST 2012 Timeout: 10000
It looks like that when this happen there is performance issue.
Confluence is hosted on the same host.