[Serusers] ser /tmp/webfifo errors, please help me

Hi All, Everything was working fine until today when I started getting errors like below but still I am able to make and receive calls. 1(9504) ERROR: open_reply_pipe: open error (/tmp/webfifo_452863019): No such file or directory 1(9504) ERROR: fifo_stats: file /tmp/webfifo_452863019 bad: No such file or directory 1(9504) ERROR: fifo_server: command (t_stats) processing failed 1(9504) ERROR: open_reply_pipe: open error (/tmp/webfifo_109612442): No such file or directory 1(9504) ERROR: fifo_stats: file /tmp/webfifo_109612442 bad: No such file or directory 1(9504) ERROR: fifo_server: command (t_stats) processing failed Some settings with my machine might have changed as we worked on some system changes. Please tell me the reason for this errors and how to fix them? Thanks, Manoj.