diff --git a/S3/Config.py b/S3/Config.py
index e6e76f0ba..046c1f444 100644
--- a/S3/Config.py
+++ b/S3/Config.py
@@ -260,13 +260,14 @@ def role_config(self):
             resp = conn.getresponse()
             files = resp.read()
             if resp.status == 200 and len(files)>1:
-                conn.request('GET', "/latest/meta-data/iam/security-credentials/%s"%files.decode('UTF-8'))
+                conn.request('GET', "/latest/meta-data/iam/security-credentials/%s" % files.decode('utf-8'))
                 resp=conn.getresponse()
                 if resp.status == 200:
-                    creds=json.load(resp)
-                    Config().update_option('access_key', creds['AccessKeyId'].encode('ascii'))
-                    Config().update_option('secret_key', creds['SecretAccessKey'].encode('ascii'))
-                    Config().update_option('access_token', creds['Token'].encode('ascii'))
+                    resp_content = config_unicodise(resp.read())
+                    creds=json.loads(resp_content)
+                    Config().update_option('access_key', config_unicodise(creds['AccessKeyId']))
+                    Config().update_option('secret_key', config_unicodise(creds['SecretAccessKey']))
+                    Config().update_option('access_token', config_unicodise(creds['Token']))
                 else:
                     raise IOError
             else:
diff --git a/S3/Utils.py b/S3/Utils.py
index 6bcfeb292..ba814e341 100644
--- a/S3/Utils.py
+++ b/S3/Utils.py
@@ -194,12 +194,12 @@ def dateRFC822toUnix(date):
 def formatSize(size, human_readable = False, floating_point = False):
     size = floating_point and float(size) or int(size)
     if human_readable:
-        coeffs = ['k', 'M', 'G', 'T']
+        coeffs = ['K', 'M', 'G', 'T']
         coeff = ""
         while size > 2048:
             size /= 1024
             coeff = coeffs.pop(0)
-        return (size, coeff)
+        return (floating_point and float(size) or int(size), coeff)
     else:
         return (size, "")
 __all__.append("formatSize")
diff --git a/s3cmd b/s3cmd
index 2ef135018..b2110eeee 100755
--- a/s3cmd
+++ b/s3cmd
@@ -102,8 +102,8 @@ def subcmd_bucket_usage_all(s3):
             buckets_size += size
     total_size, size_coeff = formatSize(buckets_size, cfg.human_readable_sizes)
     total_size_str = str(total_size) + size_coeff
-    output(u"".rjust(8, "-"))
-    output(u"%s Total" % (total_size_str.ljust(8)))
+    output(u"".rjust(12, "-"))
+    output(u"%s Total" % (total_size_str.ljust(12)))
     return size
 
 def subcmd_bucket_usage(s3, uri):
@@ -131,9 +131,14 @@ def subcmd_bucket_usage(s3, uri):
     except KeyboardInterrupt as e:
         extra_info = u' [interrupted]'
 
-    total_size, size_coeff = formatSize(bucket_size, Config().human_readable_sizes)
-    total_size_str = str(total_size) + size_coeff
-    output(u"%s %s objects %s%s" % (total_size_str.ljust(8), object_count, uri, extra_info))
+    total_size_str = u"%d%s" % formatSize(bucket_size,
+                                          Config().human_readable_sizes)
+    if Config().human_readable_sizes:
+        total_size_str = total_size_str.rjust(5)
+    else:
+        total_size_str = total_size_str.rjust(12)
+    output(u"%s %7s objects %s%s" % (total_size_str, object_count, uri,
+                                     extra_info))
     return bucket_size
 
 def cmd_ls(args):
@@ -184,18 +189,25 @@ def subcmd_bucket_list(s3, uri, limit):
             error(S3.codes[e.info["Code"]] % bucket)
         raise
 
+    # md5 are 32 char long, but for multipart there could be a suffix
+    if Config().human_readable_sizes:
+        # %(size)5s%(coeff)1s
+        format_size = u"%5d%1s"
+        dir_str = u"DIR".rjust(6)
+    else:
+        format_size = u"%12d%s"
+        dir_str = u"DIR".rjust(12)
     if cfg.long_listing:
-        format_string = u"%(timestamp)16s %(size)9s%(coeff)1s  %(md5)32s  %(storageclass)s  %(uri)s"
+        format_string = u"%(timestamp)16s %(size)s  %(md5)-35s  %(storageclass)-11s  %(uri)s"
     elif cfg.list_md5:
-        format_string = u"%(timestamp)16s %(size)9s%(coeff)1s  %(md5)32s  %(uri)s"
+        format_string = u"%(timestamp)16s %(size)s  %(md5)-35s  %(uri)s"
     else:
-        format_string = u"%(timestamp)16s %(size)9s%(coeff)1s  %(uri)s"
+        format_string = u"%(timestamp)16s %(size)s  %(uri)s"
 
     for prefix in response['common_prefixes']:
         output(format_string % {
             "timestamp": "",
-            "size": "DIR",
-            "coeff": "",
+            "size": dir_str,
             "md5": "",
             "storageclass": "",
             "uri": uri.compose_uri(bucket, prefix["Prefix"])})
@@ -213,11 +225,11 @@ def subcmd_bucket_list(s3, uri, limit):
                 except KeyError:
                     pass
 
-        size, size_coeff = formatSize(object["Size"], Config().human_readable_sizes)
+        size_and_coeff = formatSize(object["Size"],
+                                    Config().human_readable_sizes)
         output(format_string % {
             "timestamp": formatDateTime(object["LastModified"]),
-            "size" : str(size),
-            "coeff": size_coeff,
+            "size" : format_size % size_and_coeff,
             "md5" : md5,
             "storageclass" : storageclass,
             "uri": uri.compose_uri(bucket, object["Key"]),