Yes, happened often.  Another thing of note was that I would get a crit off and all of my chains would pop up but they were all greyed out.  Not blackened out as if they were not active, but greyed like I didnt have the endurance for them (but I did).  I could use the keyboard button to activate the chain (default "G") but couldnt click on it.  Of course, using this only sets off flying kick and not 1k fists.  This happened randomly it seemed last night.

I've noticed this twice while leveling and once when using aum to see if I had new Dragon mastery abilities.  It's always been fixed by logging out and back in.

I've /bugged it in game each time.

As for nerfing..

I watched a lvl 10 cleric beat up a few lions east of Khal. I saw him do three in three attempts. I noticed how much damage he took on his red bar.  Then he left.

I then proceeded to attack the same lions...at lvl 16 i took far more damage then the cleric did measured as % of the red bar. . I might have finished the lion a bit faster and I got xp for them.

Having checked with other monks i feel my armor is about right for my lvl ( AC 300+).

Now it feels odd that a lvl 10 cleric is a better soloer than a lvl 16 monk when fighting the same monster.
I hope the new damage system using weapon damage will help the situation.

Well you have to remember that a cleric wheres plate and mitigation is much better then evasion... however yeah there should be a big difference in 6 levels... what were the level of the mobs?

Soluss, they were about my lvl. 2 green dots as i remember it. I took about 50-60% damage and the cleric took about 30-40% somewhere. and he was using a 2 -handed weapon.

I dont think he was healing himself but of course my reading of his "red bar" might be sluggish because of gamemechanics. But even if he was the thougt that he, all things considered, was doing better than me was a bit weird.

I first noticed this when i walked down the harmonious path.  Dragon and Drunken finisher abilities disappeared.  Quick check here on the forums revealed a relog fixes it.  It appears to be somewhat random when it happens but a few events tend to trigger it.  One would be when i level it performs some sort of update and removes finisher attacks that aren't of my path.  The other is when i meditate and check to see if i learned any new abilities.  That also seems to run some sort of update on my abilities and makes the finishers disappear.  They're still in my spell book but using a macro also does not allow me to use the ability.  Relogging fixes the issue.  It can be annoying but its not up on my priority list thats for sure.  I just hope we weren't origionally intended to not have these attacks if we weren't in those styles.  I hope the fix leaves us with the finishers haha!