Wireshark · Wireshark-users: [Wireshark-users] packets lost at 480Mbps

[jli@xxxxxxxxxxxx]

Hi: 
   I am running wireshark-win32-1.1.2  on WinXP sp3 to capture packets with changeless number, but found packets lost when "drop" is zero, and the number of lost packets is  just the same as number added in "Interface -> details -> statistics-> Receive but no buffer". 
    Does "Receive but no buffer " means MAC buffer is full so MAC discard packets, or wireshark reading and saving speed is too slow so wireshark discard same packets?
     Anyone will help me?