When I load Minetest I am presented with the basic login screen. However when I try to type my username, created at gameboom.net, I do not see text being written. The cursor moves as if text is being input but is not displayed. When I type my password into that field I DO see the circular white dots. The same thing happens in the Server field, I do not see the typed input when trying to enter gameboom's server address, however the port field displays 30000 in small white lettering. All 4 input fields contain a grey background. When I try to connect after inputing all information into required fields, even though those two fields can not be seen, and try to connect I get "Access Denied: Reason, empty name" error and then end up back at the client/server initial load screen.
System this is being run on is an Imac G3 with Lubuntu 12.04 precisepangolin release. I've added the repository, through terminal and updated, then installed through synaptics package manager. Any assistance figuring out why these fields are not appearing/populating would be greatly appreciated.