Fraps creating line blur amidst screen while recording

I've recorded me playing some demo's of games with higher requirements; i.e.
http://www.youtube.com/watch?v=VLhDgjgLNQE
so it's not my pc lacking...

yet with CF, I'm getting this weird line in the middle of the screen that looks glitchy. It not only looks bad but makes it harder to play since it smushes the screen over itself by a few millimeteres

liek the line for dual-vision bifocles amidst near/far-sighted:
655px-Bifoklabrille_fcm.jpg

My PC Specs:

Manufacturer: Hewlett-Packard
Processor: AMD Phenom(tm) II X4 830 Processor (4 CPUs), ~2.8GHz
Memory: 6144MB RAM
Hard Drive: 987 GB
Video Card: NVIDIA GeForce GTS 450
Monitor: BENQ GL2030 20" LED Monitor
Sound Card: Speakers (Realtek High Definition Audio)
Speakers/Headphones: Altec Lansing speakers
Keyboard: USB Root Hub
Mouse: Logitech G9
Mouse Surface: Cyber Snipa Aluminium Mouse Pad
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)

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