DENVER, Colorado (CNN) -- When Denver and other Colorado cities switched from a precinct system to a more centralized voter center system, it was supposed to speed up the voting process, but that hasn't been the case so far.

Under the new system, voters can go to any of the city's many voting centers to vote. They come in and go to a laptop to check-in. Poll workers pull up their name and precinct and then program the e-voting machine and pull up their precinct ballot.

The bad news for many voters here at the Botanical Garden voting center is that the laptops crashed earlier today, so it's been a logjam. A two-hour line developed, but with the laptops up and running again, officials hope the line starts shrinking.

The process can't go quickly enough for some voters. I spoke to Stella Karabin, an elderly voter who was carrying a portable oxygen tank. They rushed Stella and her husband Myron to the front of the line because she didn't have two hours worth of oxygen. It still took the Karabins around 45 minutes to vote.