Messages on squid server with kernel 2.4

Hi All Since installing Kernel 2.4.3 on our proxy server here (from 2.2.16) I am seeing the following in the messages file: Apr 18 12:17:46 proxy2 kernel: eth0: 0 multicast blocks dropped. Apr 18 13:05:54 proxy2 kernel: eth0: 0 multicast blocks dropped. Apr 18 13:09:35 proxy2 kernel: eth0: 0 multicast blocks dropped. Apr 18 21:54:06 proxy2 kernel: eth0: card reports no resources. Apr 19 12:40:46 proxy2 kernel: eth0: card reports no resources. Apr 19 18:12:09 proxy2 kernel: eth0: card reports no resources. Any ideas? Thanks Paul