UPDATE FOR JELLYBEAN 4.3
Go to Settings --> More --> Application manager --> (All the way to the right) TURNED OFF
Under the TURNED OFF section, if DOWNLOAD MANAGER and/or PLAY STORE are listed here, turn them on!
If this was the case, you should be getting a lot of new downloads you've been missing out on. This was my issue. However, I now have another issue with my Kaspery Mobile Security continuously giving me "Unfortunately, Kaspersky Mobile Security has stopped" infinitely. It doesn't stop popping up and it has rendered my phone unusable. Anyone else get a problem similar to this? How can I work around this considering I'm not able to do anything but tap "OK" to my heart's content?
I'm hoping that--as I'm getting FLOODED with downloads still--perhaps Kaspersky is still on a list of pending downloads. I will update this accordingly. Even though that message is the only thing on my screen, the "drag down" is still displaying notifications. Can't do anything else with the phone, though.