Fix bug 9686: Slowdown after heavy usage
Fix bug 9686: Slowdown after heavy usage

thorsteneckel/otrs,thorsteneckel/otrs,muehlbauer/otrs,brandonshults01/otrs,eliasp/otrs,muehlbauer/otrs,oiami/otrs,capeit-tto/otrs,PortgasDAce/otrs,mburggraf/otrs,capeit-tto/otrs,s7design/otrs,s7design/otrs,thorsteneckel/otrs,nilei/otrs,muehlbauer/otrs,xhoy/otrs,rudy500/otrs,noritnk/otrs,brandonshults01/otrs,mburggraf/otrs,linearregression/otrs,s7design/otrs,rudy500/otrs,mburggraf/otrs,s7design/otrs,moritz/otrs,balazj/otrs,moritz/otrs,MBRG/otrs,nilei/otrs,crythias/otrs,brandonshults01/otrs,mburggraf/otrs,muehlbauer/otrs,eliasp/otrs,vlascoder/otrs,eliasp/otrs,oiami/otrs,linearregression/otrs,brandonshults01/otrs,StCyr/otrs,crythias/otrs,xhoy/otrs,rudy500/otrs,rudy500/otrs,vlascoder/otrs,brandonshults01/otrs,PortgasDAce/otrs,balazj/otrs,xhoy/otrs,crythias/otrs,MBRG/otrs,balazj/otrs,linearregression/otrs,StCyr/otrs,noritnk/otrs,mbeijen/otrs-1,PortgasDAce/otrs,balazj/otrs,crythias/otrs,nilei/otrs,oiami/otrs,s7design/otrs,PortgasDAce/otrs,rudy500/otrs,mburggraf/otrs,oiami/otrs,crythias/otrs,noritnk/otrs,linearregression/otrs,StCyr/otrs,eliasp/otrs,xhoy/otrs,moritz/otrs,nilei/otrs,muehlbauer/otrs,MBRG/otrs,xhoy/otrs,StCyr/otrs,vlascoder/otrs,nilei/otrs,moritz/otrs,mbeijen/otrs-1,oiami/otrs,StCyr/otrs,balazj/otrs,eliasp/otrs,linearregression/otrs,thorsteneckel/otrs,thorsteneckel/otrs,PortgasDAce/otrs,MBRG/otrs,moritz/otrs,MBRG/otrs,capeit-tto/otrs,mbeijen/otrs-1