--- profile.py	Fri Apr 28 16:08:04 2000
+++ profile2.py	Wed Aug 23 02:18:29 2000
@@ -246,6 +246,7 @@
 		rtt = rtt + t
 		sft = rtt + rct
 
+		if not rcur: return 0
 		pt, ptt, pct, pfn, pframe, pcur = rcur
 		self.cur = pt, ptt+rt, pct+sft, pfn, pframe, pcur