Originally Posted by Satyaveer Arya
What command you executed while updating?
If he is using Update Manager like he says he would have just used the menu entry or the panel pop up to start it.
@ future_computer, you have posted a really vague question and it really makes it difficult to offer any real help until you give us some more information. Your user profile says you are using Ubuntu is this correct? what version are you using? Why are you using getdeb for dropbox instead of using dropbox's own build?
I think you will need to remove dropbox and start again but without more information it is hard to know what is happening.