We have deployed several SP2 servers for testing, and are finding this annoying issue.
Approx every 30 seconds, the RX dropped counter ticks up by 1. This is only happening on SLES11 SP2 systems.
Usually when this counter ticks, it lines up with rx_fw_discards in ethtool statistics. I cannot find a matching stat for this drop.

eth0 Link encap:Ethernet HWaddr 00:21:9B:A0:07:7E
inet addr:192.168.69.247 Bcast:192.168.69.255 Mask:255.255.255.0
inet6 addr: fe80::221:9bff:fea0:77e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:61591 errors:0 dropped:276 overruns:0 frame:0
TX packets:38438099 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:39053090 (37.2 Mb) TX bytes:49909260932 (47597.1 Mb)
Interrupt:36 Memory:d2000000-d2012800

NIC statistics:
rx_bytes: 42672588
rx_error_bytes: 0
tx_bytes: 55266311872
tx_error_bytes: 0
rx_ucast_packets: 32153
rx_mcast_packets: 31988
rx_bcast_packets: 4239
tx_ucast_packets: 37456
tx_mcast_packets: 42720893
tx_bcast_packets: 4
tx_mac_errors: 0
tx_carrier_errors: 0
rx_crc_errors: 0
rx_align_errors: 0
tx_single_collisions: 0
tx_multi_collisions: 0
tx_deferred: 0
tx_excess_collisions: 0
tx_late_collisions: 0
tx_total_collisions: 0
rx_fragments: 0
rx_jabbers: 0
rx_undersize_packets: 0
rx_oversize_packets: 0
rx_64_byte_packets: 3667
rx_65_to_127_byte_packets: 22572
rx_128_to_255_byte_packets: 16761
rx_256_to_511_byte_packets: 353
rx_512_to_1023_byte_packets: 70
rx_1024_to_1522_byte_packets: 24957
rx_1523_to_9022_byte_packets: 0
tx_64_byte_packets: 56728
tx_65_to_127_byte_packets: 34705
tx_128_to_255_byte_packets: 1478329
tx_256_to_511_byte_packets: 2166944
tx_512_to_1023_byte_packets: 3321491
tx_1024_to_1522_byte_packets: 35700156
tx_1523_to_9022_byte_packets: 0
rx_xon_frames: 0
rx_xoff_frames: 0
tx_xon_frames: 0
tx_xoff_frames: 0
rx_mac_ctrl_frames: 0
rx_filtered_packets: 45678
rx_ftq_discards: 0
rx_discards: 0
rx_fw_discards: 0

driver: bnx2
version: 2.1.11
firmware-version: 6.4.5 bc 5.2.3 NCSI 2.0.11
bus-info: 0000:01:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes

I have tried the latest driver 2.2.11j from broadcom with same results. Any ideas what might tick this counter?