Hello!
I find that "clock consistency check" doesn't work for today item.
For example, when I come into the log mode by C-c a l ,it looks like this:

>XXX (someday before today)
>  Emacs:      12:56-16:09 Clocked:   (3:13) STARTED The Org Manual
>  生活:       16:34-16:49 Clocked:   (0:15) 杂务
>  生活:       17:08-17:22 Clocked:   (0:14) 杂务
> ......
>XXX (today)
>  物理:       16:46-16:56 Clocked:   (0:10) 静电场
>  生活:       17:07-17:36 Clocked:   (0:29) 休息
>  物理:       17:36-17:46 Clocked:   (0:10) 静电场
>  goal:       19:10-22:41 Clocked:   (3:31) 林肯

After "v c" to check the clock consistency,,it looks like this:
>XXX (someday before today)
>  Emacs:      12:56-16:09 Clocked:   (3:13) STARTED The Org Manual
>Clocking gap: 25 minutes
>  生活:       16:34-16:49 Clocked:   (0:15) 杂务
>Clocking gap: 19 minutes
>  生活:       17:08-17:22 Clocked:   (0:14) 杂务
> ......
>XXX (today)
>  物理:       16:46-16:56 Clocked:   (0:10) 静电场
>  生活:       17:07-17:36 Clocked:   (0:29) 休息
>  物理:       17:36-17:46 Clocked:   (0:10) 静电场
>  goal:       19:10-22:41 Clocked:   (3:31) 林肯

It seems only to loose its power on today...This really confused me when I want to summarize today's work.

Regards,
Yuchen