I've used Liferea for 3 years and AFAIR I didn't have any similar problems.
Reddit's feed is fine (in case you share the code - I'm not from around here...).
The most annoying "feature" of flash in this case is that you can't search [for Paul Graham] in the text.
Flash is good for embedding videos, animating stuff, etc. It's terrible for text and navigation, as the accessibility is next to none.
I've used Liferea for 3 years and AFAIR I didn't have any similar problems.
Reddit's feed is fine (in case you share the code - I'm not from around here...).