Blocky/Pixelatted parts on my new 19" LCD computer monitor from digital videos.

Yesterday, I bought a new 19" Samsung SyncMaster 931BF LCD TFT monitor
(http://www.samsung.com/nz/products/monitors/tft/931bf.asp ; 1280x1024)
to replace my dying old 17" Samsung SyncMaster 463MB CRT monitor. I have
been watching HDTV recordings for over a year on the old screen
(1152x864 resolution).

I noticed on my new monitor, there were more blocky and pixelated parts
in the videos, especially with the action/fast scenes. I notice them
more with high definition (HD) instead of standard definition (SD) [like
TV commercials]. A good example is with last week's Smallville episode
(1080i on KTLA 5) I recorded. I saw the episode on my CRT and never
noticed those. With LCD, I notice them. Red parts seem to get them.

Is this normal to notice these flaws? Are these MPEG-2 compressions by
design? I assume this is not related to the the ghosting effect. It
shouldn't have this problem with 2 ms speed. FYI, I use over the air
(OTA) for my digital TV feeds and I am in Los Angeles, CA, USA area.

Thank you in advance.
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