Wow, Acrobat Pro XI crashes constantly ...

Question

I accidently posted this in the wrong forum, but here's my problem:
Hey everyone,
I work with large PDF files (sometimes 1000 page documents) and I move pages from one PDF to another sometimes.  I've found that Acrobat XI pro is terrible with it's stability.  I am having the program crash probably 5 to 10 times per day.  It's pretty crazy because I probably had 5-10 crashes PER YEAR for Acrobat X pro.  I'm wondering if it's the new font flattening or whatever that constantly makes this happen?
Anyway, I've found it will constantly crash when you have the thumbnail pages on the left in view, and scroll through those thumbnail pics.  If I scroll through them fast (like rolling down a web page fast) then it crashes, and I mean constantly.  I have now adapted my use of the program to go slow - like "a 4 year old child might scroll down a web page" slow.  And it STILL CRASHES.  It's pretty shocking.
I don't mind, it's a huge pain but I can still work... BUT here's the thing.  If it crashes while you are writing something in a text box then it can RUIN all of your notes on the entire document.  The font is still there but it just turns into a bunch of XXXXXXXXXXX's with boxes around them.  I can manually go in and edit all of these and change the font from XXXXXXXXXXXXXXXXX's version to whatever, and the text will come back - but doing this in a 1000 page document with 2000 text boxes is NOT possible.
Very surprised to see such an unstable product come from Adobe.  I was going to let this slide until I saw that it has the ability to wipe out 30 hours of editing work via this crazy crash and turn all the font into XXXXXXXXXXXXXX.  It's not really acceptable to do stuff like this because you can wreck a whole work week (or even month if you have a huge document).  How is this possible guys?
Great improvements with the program as far as work flow, but it's all for naught if your program crashes multiple times per day.  I would recommend others stay away from this program if you are doing anything important that you don't want to lose.  Or if you are making important edits.
Want to know what I mean by XXXX's?  Here you go:
Imagine you have tons of edits on your document that used to be words and they become this font.  Imagine you have 100 hrs of editing work becoming this.  It could literaly cost you 50 hrs of productive time... just wow.
This has happened at least 7 or 8 times, luckily I was only working with under 100 edits and it only took maybe 30 minutes to clean up.  If it happened to one of my big documents I just might punch a hole through a wall.

Answer 1

Trust me, I use ZERO third party anything.  I reinstalled the program clean yesterday too.
I think the embed commands are probably part of the whole thing.  I don't 100% understand how it works, but I know that an edit eventually flattens out and becomes non editable text the normal way.
I don't always get the XXXX's, that problem is rare (<5% of the time).  But the crashing happens a lot.  Right now I have to use some big files because they are built to search through a huge file - so I'm kind of out of luck for that.  If I can possibly eliminate the edits on the thumbnails (all the text boxes and drawings) - I bet that would help.  I tried to keep the thumbnail previews closed and I think it was crashing 1/2 as often.  It still is terribly unstable.
I mean, XI crashed more in 1 day than I had X crash in a whole year.  That's pretty staggering.  Working with similar file sizes.  Maybe the trading of pages via thumbnails isn't stable, that's the only true new thing - and obviously the new text editing thing where they flatten out.