Issue:
Withdrew money from bank, game froze(?), reloaded and money was gone.

Character: Zombie (Hardcore mode)
Mode: Server
Browser: Chrome (43.0.2357.65 m)
Time: Around 12:00 - 12:20 AM (CDT)

Events:
I may or may not have put all my money into the bank.
I then attempted to withdraw 100,000
Game became slow.
I verified the character received the 100,000
I decided to deposit the money back into the bank - unsure if it was safe.
Game (froze?) unable to go to camp to save and quit.
I refreshed the page, but this had no effect.
I closed the Chrome window and opened a new one, reloading nevergrind.
Logging back in, the 100,000 was gone.
Depositing and withdrawing is fine now.

Other possible factor:
I was logged in for a long period. I did notice the last time I change zones it took longer than normal to load.

Just noticed the character's Talent points are at -1 now too.
My progress fell back a couple stages.

Looks like the issue could have started earlier.

I shall investigate. Thanks for the heads up. I'm on the road today, so I can't look at this right now.