Navita performed slowly this morning between 9:15 and 9:35 EEST and Navita web application showed major outage during this period. Navita responded, but very slowly. Similar event we faced a day before in the afternoon. We have localized the root cause which caused high CPU peak and affected on Navita performance. We disabled this specific root cause and will improve the system to prevent high cpu load in similar cases. We apologize slow performance of Navita during this period.