Hi,
it can be fixed easily, see the attached patch.
--- /usr/sbin/backup2l.orig 2005-01-04 16:10:22.000000000 +0100
+++ /usr/sbin/backup2l 2009-03-08 22:41:37.105693399 +0100
@@ -47,7 +47,7 @@ FILTER_CHOWN="sed 's#^\( *[^ ]\+\)\{3\}
# sed command for extracting ownerships and names from .list files
FILTER_CHMOD="sed 's#^\( *[^ ]\+\)\{4\} *\([0-9]\{4\}\) \+/\(.*\)\$#\2 \"\3\"#'"
# sed command for extracting permissions and names from .list files
-FILTER_UNIFY_NAME="sed 's#\\[0-7]\{3\}#?#g; s#[^a-zA-Z0-9_ .$%:~/=+\#\-]#?#g'"
+FILTER_UNIFY_NAME="sed 's#\\\\[0-7]\{3\}#?#g; s#[^a-zA-Z0-9_ .$%:~/=+\#\-]#?#g'"
# replaces special and escaped characters by '?';
# only used when checking TOCs of fresh backup archives in order to avoid false alarms
