Wakeup for EPG-grabbing not at specified time (1 Viewer)

[pünktchen]

MediaPortal Version: 1.1.2
MediaPortal Skin: Maya
Windows Version: Windows 7 x32
CPU Type: AMD X2 4800+ Brisbane @ 2,5 GHz
HDD: Western Digital Caviar Green WD7500AACS 750 GB
Memory: 2 GB DDR2 @ 800 MHz
Motherboard: MSI KA790GX
Video Card: PowerColor PCS HD4670 512MB GDDR3
Video Card Driver: 10.9
Sound Card: Realtek® ALC888 onboard
1. TV Card: TechnoTrend TT-budget C-1501
1. TV Card Type: DVB-C
1. TV Card Driver: 5.0.1.8

In TV-Server Power Scheduler and Web-EPG I've defined wake up for EPG grabbing on thursday 8.00AM but TV-Service wakes up the PC every day at 8.00AM
(I'm not sure, but think I have this problem since fresh install of MP 1.1.0 last year)

My question: Has anybody ever had the same problem and solved it without reinstalling TV-Server and MySQL?

Thanks
pünktchen