I noticed a weird behavior when updating applications with the newer Gingerbread (2.3.5?) and now Ice Cream Sandwich (4.0.3) builds. It might also be the case with other versions, but I have not seen it with 2.3.3 and lower on my Nexus S. EDIT: As Chahk pointed out below, it might not be related to the Android OS version but rather to a recent change in the Market App.
I have a lot of apps installed (currently around 160). Now when I go to the Market after a couple of days there are usually several updates available (say 10).
The way it used to be: I hit "Update 10" and let the device download and install the updates. After that I had 10 separate "Successfully updated" notification messages in my notification window.
The way it is now: During update installations the "Successfully updated" notifications seem to randomly disappear or not show up at all.
Why is that? Is there a way to get the old behavior back? Otherwise there would be no way to tell which apps have received updates without first making a list of all the apps prior to pressing "Update".