[Serusers] problems about the start and the stop of ser

I have installed ser in my computer 1, my computer 1 is in a LAN, and I have another computer 2 in the LAN, I have a msn messenger 4.6 installed in 2, and I configured msn 4.6 according to howto, I fill the IP address of 1 in server name or IP address in msn advanced configures. but when I want to register, it says that the network service is currently unavailable, but I can ping 1 form 2. when I start ser, I can stop it at the first time, When I restart it, if I stop in immediately, it is ok. but if after a few minuters, I want to stop it, it responses as the following /etc/rc.d/init.d/ser: line 195: kill: (4573) - no such process /etc/rc.d/init.d/ser: line 195: kill: (4572) - no such process .......................... Can anybody help me? _________________________________________________________ Do You Yahoo!? 惠普TT游戏剧，玩游戏，中大奖！ http://cn.rd.yahoo.com/mail_cn/tag/SIG=1402c0to2/**http%3A%2F%2Fhp.allyes.c…