Thanks for the fast anwser... here is the logfile:
********* FSUIPC, Version 3.75 by Pete Dowson *********
Running on Windows Version 5.0 Build 2195 Service Pack 4
Verifying Certificate for "D:\sim\Flight Simulator 9\MODULES\FSUIPC.dll" now ...
FAILURE! "WinVerifyTrustEx" error 0x800B0110:
This return is non-standard, possibly specific to trust provider
Running inside FS2004 (FS9.1 CONTROLS.DLL, FS9.1 WEATHER.DLL)
User Name=""
User Addr=""
FSUIPC not user registered
WIDEFS not user registered, or expired
FSUIPC.DLL signature does not verify: running in failed mode!
... if the DLL has not been tampered with, then either the Cryptographic
Services in Windows are broken, or you need to run the Globalsign fix supplied.
Module base=61000000
ClassOptions: UIPCMAIN=FF7F, FS98MAIN=FF7F, FS2KMAIN=FF5E
WeatherOptions(Orig)=0000B027[0000B027]
InitDelay: 0 seconds
WeatherReadInterval=4
LogOptions=0000000D
DebugStatus=0
19516 System time = 22:52:56
19531 D:\sim\Flight Simulator 9\
19547 System time = 22:52:56, FS2004 time = 12:00:00 (00:00Z)
27094 C:\Documents and Settings\josef\My Documents\Flight Simulator-Dateien\test.flt
27235 AIRCRAFT\c172\Cessna172SP.air
33500 Advanced Weather Interface Enabled
99172 AIRCRAFT\c182\Cessna182S.air
149172 C:\Documents and Settings\josef\My Documents\Flight Simulator-Dateien\Von der Benutzeroberfläche erzeugter Flug.flt
149281 Clear All Weather requested: external weather discarded
364953 READ0 3304, 4 bytes: 02 00 00 00
364953 READ0 3308, 4 bytes: 02 00 00 00
364953 WRITE0 (failed, read-only!) 330A, 2 bytes: EC 03
365078 READ0 3304, 4 bytes: 02 00 00 00
365078 READ0 3308, 4 bytes: 02 00 00 00
523391 WRITE0 (failed, read-only!) 330A, 2 bytes: EC 03
this repeats often...
523531 READ0 3304, 4 bytes: 02 00 00 00
523531 READ0 3308, 4 bytes: 02 00 00 00
523531 WRITE0 (failed, read-only!) 330A, 2 bytes: EC 03
524610 READ0 3304, 4 bytes: 02 00 00 00
524610 READ0 3308, 4 bytes: 02 00 00 00
524610 WRITE0 (failed, read-only!) 330A, 2 bytes: EC 03
525000 System time = 23:01:21, FS2004 time = 22:57:57 (21:57Z)
525000 *** FSUIPC log file being closed
Memory managed: 0 Allocs, 2224 Freed
********* FSUIPC Log file closed *** *******