Without too much detail, was there anything in your application that would need further review? For example, any arrests, etc., that DPS would need to look into further would cause the application to take more time. Also, a lot of time the application process isn't updated on the DPS end until your application is approved and the license is being printed. This happened to me. My status stayed the same as yours until one day it said license printing (or whatever official language is put on the status).
Also, are you sure that DPS has received your documents? Did you send the documents return receipt USPS? If you are sure DPS has received your documents (return receipt was signed, etc.) and you haven't heard something within the next week or so, and there is nothing in your application that would require further attention, then I would definitely give them a call.
TBM