scrolling/frame/css problem

[Reid]

Whenever I view my website in a frame (such as when an
image is viewed from a google search), the text and
graphics smear upon scrolling. I've set up a test frame
for demonstration.

http://my.win.psu.edu/roe101/frameproblem.html
(The top frame points to nothing)

The path for the page in question is:
http://my.win.psu.edu/roe101/default.aspx

Strangely, the smearing doesn't begin until about 200
pixels (or so) in the target frame. I use CSS, so that
may be the source of the problem. I really cannot
explain why this occurs. I'm not using any fancy
javascript or anything. This problem does not occur in
Mozilla browsers. Any thoughts would be appreciated.

 

[Reid]

Forgot to mention my system setup:

IE Version: 6.0.2800.1106.xpsp2.030422-163

Processor(s)
Model : AMD Athlon(tm) XP 2600+
Speed : 2.09GHz
Model Number : 2600 (estimated)
Performance Rating : PR3052 (estimated)
L2 On-board Cache : 256kB ECC synchronous write-back

Mainboard and BIOS
Bus(es) : ISA AGP PCI USB FireWire/1394
MP Support : 1 CPU(s)
System BIOS : Award Software International, Inc. F10
Mainboard : Gigabyte Technology Co., Ltd. GA-7VAXP
System Chipset : Giga-Byte Technology Unknown (3189)
Front Side Bus Speed : 2x 167MHz (334MHz data rate)
Installed Memory : 512MB

Video System
Monitor/Panel : Default Monitor
Monitor/Panel : Samsung SyncMaster 570V/580V TFT
Adapter : NVIDIA GeForce4 MX 440 with AGP8X

Peripherals
Serial/Parallel Port(s) : 2 COM / 1 LPT
USB Controller/Hub : VIA Rev 5 or later USB Universal
Host Controller
USB Controller/Hub : VIA Rev 5 or later USB Universal
Host Controller
USB Controller/Hub : VIA Rev 5 or later USB Universal
Host Controller
USB Controller/Hub : Standard Enhanced PCI to USB Host
Controller
USB Controller/Hub : USB Root Hub
USB Controller/Hub : USB Root Hub
USB Controller/Hub : USB Root Hub
USB Controller/Hub : USB Root Hub
USB Controller/Hub : Microsoft Integrated USB Hub
FireWire/1394 Controller : VIA OHCI Compliant IEEE 1394
Host Controller
Keyboard : Standard 101/102-Key or Microsoft Natural PS/2
Keyboard
Mouse : Microsoft USB IntelliMouse Explorer
Human Interface : Microsoft USB IntelliMouse Explorer

Operating System(s)
Windows System : Microsoft Windows XP Professional Ver
5.01.2600 Service Pack 1