--- pym/portage_checksum.py.orig	2006-04-27 13:43:04.000000000 +0200
+++ pym/portage_checksum.py	2006-04-27 13:58:24.000000000 +0200
@@ -102,6 +102,9 @@
 			continue
 		elif x in hashfunc_map.keys():
 			myhash = perform_checksum(filename, x, calc_prelink=calc_prelink)[0]
+			#XXX: temporary workaround for bug #131293:
+			if x == "SHA256" and mydict["size"]%64 == 55:
+				continue
 			if mydict[x] != myhash:
 				if strict:
 					raise portage_exception.DigestException, "Failed to verify '$(file)s' on checksum type '%(type)s'" % {"file":filename, "type":x}