Same problem as akabanekuroido. I can enter data. The data is however not stored or becomes not visable.
I tried Glom many times on Ubuntu 12.04 Precise. With the version from the softwarecentre the field type changed back to number every time. When using the new PPA this problem was gone, but then when in Operator mode I could not enter numbered data in the database. After some time I could not enter any new data at all. Tested it on a i3 Intel and a AMD e350,on both the same problem
This is much easier to use than Openoffice Base. Also, Base has quite a few subtle bugs on linux machines.