welcome.py does not support unicode in "enough edits to be welcomed" message.
See below:
7 users have been welcomed.
%E3%82%B8%E3%83%A3%E3%83%B3%E3%82%AC%E3%83%AA%E3%82%A2%E3%83%B3 has enough edits to be welcomed <--- !
Sleeping for 25.5 seconds, 2008-02-19 19:05:28
Creating page [[ja:利用者‐会話:ジャンガリアン]]
Pausing 5 seconds due to database server lag.
Sleeping for 24.4 seconds, 2008-02-19 19:05:59
Creating page [[ja:利用者‐会話:ジャンガリアン]]
8 users have been welcomed.
Thanks.
Logged In: YES
user_id=1327030
Originator: NO
Should be fixed in r5056.