Guild Wars 2

As a new Guardian (only level 6), I am having problem stay in range of mob using my melee weapon. They keep running away and just using AWD to run after them seems inefficient. I also seems to run slower than them. I spend more time running after them than attacking. What am I doing wrong? Any suggestion?

For melee weapons, if there an easy way to auto-run/chase and auto-attack a ranged mob that keep running away. I find using the AWD keys to chase and left-click to start auto-attack rather troublesome.

With ranged weapon, I can just left-click and auto-attack tracks and keep up the attacks. If mob runs too far away, I just move forward a bit and auto-attack auto-starts. So much easier.

I die instantly when stepping into Mealstrom’s Bile area in Mount Mealstrom. Two other players online at the same time was having the same issue. We are not attacked by any mob. Just take a 11k damage and die by taking one step forward. Same thing happen whether I go in by the north or south entrance.

Is this a known bug or something new? Where do I see a list of known bugs?