wordplay - Help! I am infected with the puzzling bug!

Argh...I can't get this bug of puzzling off my head! It's really weird, and so annoying, you know...I can't help thinking about puzzles all the time. It's like... when I see a word, I think of anagrams...when I see tiled floors, I think of sudoku on them...when I see a door, I look for loose bricks or business cards...

What's worse, this bug is heavily affecting my brain. For example, today I found that I had written the following on my notebook:

Text version:

This information technology simply never obeys the leaders. Nasal fluid begins a big ugly Indian mountain. A stupid person is the manager of codes. A locker is secure in heavy halogen. You are Eastern river in England.

Length: 2433423

Now I don't remember what it means, except that I've a feeling that the punctuations might be irrelevant. Maybe you people can help me out?

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_{Sorry if the backstory sounds annoying or unnecessary; it originates in a chat post.}

_{I don't claim any of the images to be my own.}

Answer

This information technology

IT (ddef)

simply never obeys the leaders. Nasal fluid

SNOT ("leaders" of "simply never obeys the")

begins a big ugly Indian mountain.

ABU (beginnings of "a big ugly")

A stupid person is the manager of codes.

GIT (ddef)

A locker is secure

SAFE (ddef: locker, secure)

in heavy halogen

AT (ddef: astatine, in)

You are Eastern river in England.

URE (homophone)

OP Edit: the intended explanation was : U(You)+R(Are)+E(Eastern)=URE.

So the answer is

IT SNOT ABU GIT SAFE AT URE

or, more descriptively,

IT'S NOT A BUG - IT'S A FEATURE!