Several Thoery on this issue so far.

来源: 于 2007-07-30 08:03:53 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

So far, there are several theory on this update:
1. system maintenance
2. data entry begins
3. check I-140 status before 485 process
4. randomly update