diff -urN linux-2.6.21.1.old/drivers/net/r8169.c linux-2.6.21.1.dev/drivers/net/r8169.c
--- linux-2.6.21.1.old/drivers/net/r8169.c	2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.dev/drivers/net/r8169.c	2007-05-26 20:58:17.370030816 +0200
@@ -494,7 +494,7 @@
 #endif
 
 static const u16 rtl8169_intr_mask =
-	SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
+	LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
 static const u16 rtl8169_napi_event =
 	RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
 static const unsigned int rtl8169_rx_config =
@@ -2640,10 +2640,12 @@
 		if (!(status & rtl8169_intr_mask))
 			break;
 
+#if 0
 		if (unlikely(status & SYSErr)) {
 			rtl8169_pcierr_interrupt(dev);
 			break;
 		}
+#endif
 
 		if (status & LinkChg)
 			rtl8169_check_link_status(dev, tp, ioaddr);