install fails

[mms-systems]

TASK: [role-lamp | Update apt cache] ******************************************
failed: [127.0.0.1] => {"failed": true, "parsed": false}
SUDO-SUCCESS-ljkdaixgcgngyucyvlyxvosyfwranbrd
Traceback (most recent call last):
File "/tmp/ansible-tmp-1418104543.83-147288450818790/apt", line 2167, in
main()
File "/tmp/ansible-tmp-1418104543.83-147288450818790/apt", line 547, in main
cache.update()
File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 440, in update
raise FetchFailedException(e)
apt.cache.FetchFailedException: W:Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/trusty-updates/main/binary-amd64/Packages Hash Sum mismatch
, E:Some index files failed to download. They have been ignored, or old ones used instead.

FATAL: all hosts have already failed -- aborting

ubuntu 14.04