I noticed this Problem the first time about 2 month ago. In the very early (04:30AM) hours of the day it still works "within normal parameters".
Finally they struggle by their own success, I guess.
A Tip: Usually the detailed database query's are working as the should. I seems, that only the multifunction search field is affected by the overload.
http://www.libhomeradar.org/databasequery/index.phpLibhomeradar is an excellent web-site that reports flights logged based upon select call-signs, registrations or mode-s codes. It has no link with AirNav/RB but there seems to be some sort of windows/pc/database conflict.
As a matter of fact this is not completely true. Because the logged Callsigns/Routing information and the A/C activity index of each A/C is done by a small transmission Software which is able to reed the Port 30003 output of the SBS and the Airnav RB and send this Info to the libhomeradar Database.
By using the personal pages the site provides you some statistic functions of your transmitted Data. There is also the possibility to generate daily reports with different layouts. Further the Personal sites can give you information about first time logged AirCraft for each day of your Data transmission.
I use libhomeradar as an additional tool to the MyLOG Database of the RB Software.
Happy new Year from snowy northern Germany.