Hi list. I'm running 2.4.7 on a windows platform (2008r2). Every now and then (5-10 times a day), a httpd.exe process goes haywire bringing all other processes to a halt. I see the apache log files filling up with thousands and thousands of lines like these: [Thu Jun 3 02:09:37 2010] -e: Malformed UTF-8 character (UTF-16 surrogate 0xda2b) in substitution (s///) at C:/Apps/otrs//Kernel/Output/HTML/OutputFilterTextURL.pm line 46. [Thu Jun 3 02:09:37 2010] -e: Malformed UTF-8 character (UTF-16 surrogate 0xda2b) in substitution (s///) at C:/Apps/otrs//Kernel/Output/HTML/OutputFilterTextURL.pm line 46. The file is not always the same. /Kernel/Output/HTML/Layout.pm line 1805. /Kernel/Modules/AgentTicketAttachment.pm line 173. /Kernel/System/HTMLUtils.pm line 779. This is a newly upgraded system running without other issues. I'm not sure what to look for or at. Any ideas? Thanks. -- /Sune T.