problems with download manager app after updating to android 4.2.2

[zizo]

since I upgraded the android verssion of my sony xperia l to 4.2.2 it stopped downloading or apdating apps 

now I used my computer to upgrade the system 15.3.A.1.12 

the same problem still exists

I don't know what to do 

[kanellos1978]

sony makes us fell very dissapointed...most of devices that costs from 150- 300 euros have many problems...we are very tired with this situation and all the non fuction updates....after sony ericsson glory days now the company is very careful only with the expensive xperia phones......they must improve the logismics of the phones and must be more responsible with the customers or else sony will loose in the global market

[PleaseFix]

my download manager is not stopping. It constantly shows that files are downloading even when am offline. will clearing data delete all my phone contacts? please fix this issue!