Yea it does take time if the applicant has travelled outside India and has stayed there(country) for 6months. Anyways as you have applied on November 2010, as sim85 said you are more likely to get the good news anytime soon by end of feb or march the latest, as the whole process takes 6mths as per cic site.

Btw jus a suggestion....incase if it be of any help 2 u, why dont you join the "Thread for applicants of NEW DELHI 2010", it will give an idea abt or by when can you get visa,Plus i have seen alot of ppl there who have same timeline like urs

and you can ask them related to this, if you have more questions or concern and get their feedback as well. Anyways i wish you goodluck n inshallah u will get d visa soon

!!