MN-700 Wireless may not on after restart

Hi,

occassionally, I need to restart my MN-700 (this is used
only as AP, not router). I usually just unplug the power
and plug it back. However, I notice that the Wireless
light usually won't come on after the first attempt (of
course, the Wireless network really not work.. only the
Wired one work). I usually need to unplug the 2nd time
and plug it back or even do it the 3rd time before the
Wireless come back. Is it something wrong with my MN-
700? Anyone experience similar thing?

thanks

Softech