[r2-releng6-i386]# diff -u if_em.h.clean if_em.h
--- if_em.h.clean       Sun Nov 26 18:30:05 2006
+++ if_em.h     Sun Nov 26 19:53:18 2006
@@ -82,7 +82,7 @@
  *   system is reporting dropped transmits, this value may be set too high
  *   causing the driver to run out of available transmit descriptors.
  */
-#define EM_TIDV                         64
+#define EM_TIDV                         32
 
 /*
  * EM_TADV - Transmit Absolute Interrupt Delay Value
@@ -96,7 +96,7 @@
  *   along with EM_TIDV, may improve traffic throughput in specific
  *   network conditions.
  */
-#define EM_TADV                         64
+#define EM_TADV                         32
 
 /*
  * EM_RDTR - Receive Interrupt Delay Timer (Packet Timer)
[r2-releng6-i386]#