diff -urN orig-5.0.72sp1/innobase/include/lock0lock.h hack-5.0.72sp1/innobase/include/lock0lock.h
--- orig-5.0.72sp1/innobase/include/lock0lock.h	2009-08-27 13:39:09.000000000 -0700
+++ hack-5.0.72sp1/innobase/include/lock0lock.h	2009-08-27 13:56:15.000000000 -0700
@@ -24,6 +24,7 @@
 #endif /* UNIV_DEBUG */
 /* Buffer for storing information about the most recent deadlock error */
 extern FILE*	lock_latest_err_file;
+extern ulint    srv_n_lock_deadlock_count;
 
 /*************************************************************************
 Gets the size of a lock struct. */
diff -urN orig-5.0.72sp1/innobase/include/srv0srv.h hack-5.0.72sp1/innobase/include/srv0srv.h
--- orig-5.0.72sp1/innobase/include/srv0srv.h	2009-08-27 13:39:09.000000000 -0700
+++ hack-5.0.72sp1/innobase/include/srv0srv.h	2009-08-27 13:56:15.000000000 -0700
@@ -541,6 +541,7 @@
         ulint innodb_buffer_pool_write_requests;
         ulint innodb_buffer_pool_read_ahead_seq;
         ulint innodb_buffer_pool_read_ahead_rnd;
+        ulint innodb_deadlocks;
         ulint innodb_dblwr_pages_written;
         ulint innodb_dblwr_writes;
         ulint innodb_log_waits;
diff -urN orig-5.0.72sp1/innobase/lock/lock0lock.c hack-5.0.72sp1/innobase/lock/lock0lock.c
--- orig-5.0.72sp1/innobase/lock/lock0lock.c	2009-08-27 13:39:09.000000000 -0700
+++ hack-5.0.72sp1/innobase/lock/lock0lock.c	2009-08-27 13:56:29.000000000 -0700
@@ -3206,6 +3206,7 @@
 		}
 
 		lock_deadlock_found = TRUE;
+		srv_n_lock_deadlock_count++;
 
 		fputs("*** WE ROLL BACK TRANSACTION (2)\n",
 			lock_latest_err_file);
diff -urN orig-5.0.72sp1/innobase/srv/srv0srv.c hack-5.0.72sp1/innobase/srv/srv0srv.c
--- orig-5.0.72sp1/innobase/srv/srv0srv.c	2009-08-27 13:39:09.000000000 -0700
+++ hack-5.0.72sp1/innobase/srv/srv0srv.c	2009-08-27 13:56:42.000000000 -0700
@@ -344,6 +344,7 @@
 static ulint	srv_n_rows_deleted_old		= 0;
 static ulint	srv_n_rows_read_old		= 0;
 
+ulint		srv_n_lock_deadlock_count	= 0;
 ulint		srv_n_lock_wait_count		= 0;
 ulint		srv_n_lock_wait_current_count	= 0;
 ib_longlong	srv_n_lock_wait_time		= 0;
@@ -1803,6 +1804,7 @@
         export_vars.innodb_buffer_pool_pages_data= UT_LIST_GET_LEN(buf_pool->LRU);
         export_vars.innodb_buffer_pool_pages_dirty= UT_LIST_GET_LEN(buf_pool->flush_list);
         export_vars.innodb_buffer_pool_pages_free= UT_LIST_GET_LEN(buf_pool->free);
+        export_vars.innodb_deadlocks= srv_n_lock_deadlock_count;
 #ifdef UNIV_DEBUG
         export_vars.innodb_buffer_pool_pages_latched= buf_get_latched_pages_number();
 #endif /* UNIV_DEBUG */
diff -urN orig-5.0.72sp1/sql/ha_innodb.cc hack-5.0.72sp1/sql/ha_innodb.cc
--- orig-5.0.72sp1/sql/ha_innodb.cc	2009-08-27 13:39:09.000000000 -0700
+++ hack-5.0.72sp1/sql/ha_innodb.cc	2009-08-27 13:56:02.000000000 -0700
@@ -282,6 +282,8 @@
   (char*) &export_vars.innodb_data_written,               SHOW_LONG},
   {"dblwr_pages_written",
   (char*) &export_vars.innodb_dblwr_pages_written,        SHOW_LONG},
+  {"deadlocks",
+  (char*) &export_vars.innodb_deadlocks,                  SHOW_LONG},
   {"dblwr_writes",
   (char*) &export_vars.innodb_dblwr_writes,               SHOW_LONG},
   {"log_waits",