I'm using winxp, and at all time I login as administrator. And my system only has an "administrator", no any other users and the "guest" is disabled. So I really have no idea.
Here's the fsuipc.log shows.
********* FSUIPC, Version 3.85 by Pete Dowson *********
Running on Windows Version 5.1 Build 2600 Service Pack 3
Verifying Certificate for "J:\Flight Simulator 9\MODULES\FSUIPC.dll" now ...
SUCCESS! Signature verifies okay!
Running inside FS2004(original release)
User Name="aho punk"
User Addr="aho@punk.com"
FSUIPC Key is provided
WIDEFS not user registered, or expired
Module base=61000000
ClassOptions: UIPCMAIN=FF7F, FS98MAIN=FF7F, FS2KMAIN=FF5E
WeatherOptions(Orig)=40003605[40003605]
InitDelay: 0 seconds
WeatherReadInterval=4
LogOptions=00000001
DebugStatus=15
9578 System time = 18:11:32
9594 J:\Flight Simulator 9\
9594 System time = 18:11:32, FS2004 time = 12:00:00 (00:00Z)
14687 FLIGHTS\OTHER\FLTSIM.flt
14812 AIRCRAFT\c172\Cessna172SP.air
15734 Aircraft="Cessna Skyhawk 172SP"
37109 J:\Flight Simulator 9\lessons\student\Lesson 7.flt
37562 Clear All Weather requested: external weather discarded
41656 Advanced Weather Interface Enabled
383406 FLIGHTS\OTHER\FLTSIM.flt
384953 Clear All Weather requested: external weather discarded
401531 J:\Flight Simulator 9\lessons\student\Lesson 7.flt
402000 Clear All Weather requested: external weather discarded
1099422 FLIGHTS\OTHER\FLTSIM.flt
1100797 Clear All Weather requested: external weather discarded