Recent block

[L0uis]

1 hour 40 minutes since last block was found. What has been the biggest gap known?

[juju]

I recall seeing this asked before a few times

http://bitcoin.stackexchange.com/questions/2324/what-is-the-longest-time-gap-between-blocks-in-the-last-year

--Taken from a google search/reddit Post--
Block 27: 2009-01-10 06:56:13
Block 28: 2009-01-10 15:30:57
Block 168: 2009-01-11 23:39:41
Block 169: 2009-01-12 03:22:03
Block 74637: 2010-08-15 17:02:43
Block 74638: 2010-08-15 23:53:59

[randy8777]

what makes it to take that long for a block. huge difficulty increase or decrease?

[MineForeman.com]

what makes it to take that long for a block. huge difficulty increase or decrease?

Standard Deviation. 

Or the more precise every day term "shit happens".

[MountainOfCoins]

Price dropped significantly and unless you have free electricity or running a farm with newest (efficient) miners - mining is not viable anymore. But the network will readjust the difficulty eventually.