Random Glitch Freeze Spot

So I was running through the Weaver's Chambers (my first time through, by the way) and I had no problems at all. No lagging, no glitching or rubber banding, nothing at all going wrong.

Then I turn a corner. Small mob of hatchling spiders, no big deal, until I can't move. None of my moves are showing up, my character isn't shooting anymore, yet the monsters are dieing, my potions are being used, and my mana is going down. After all the spiders are dead, I still can't move. I attempted to town portal and even that didn't work. I don't know if it was the map or my computer, but I had to re-log in to get to do anything. Once I logged back in, everything was working fine, no movement or other issues.

Just a heads up in case it's a glitch in the map or something. If it's not that, and it's my computer (possible, as it's an old laptop) that's fine, but I'd rather it not happen to someone else.