Software Center takes to much time to install software

[Adam Klobukowski]

I have a lot of package sources (private and not private). So, updating package list takes some time.

Each time I install new bought software, software center adds new package source, updates package list, then downloads&installs package. Of this opration, the most time is taken by adding package source and updating package list.

Now, when I install more then one package this way at a time (which is not so uncommon in the age of Humble Bundles) it takes a lot of time to add package source and update package list for each software piece in a queue.

When there are similar operations in the queue (add package source, update package list), they should be reordered and merged, so they take less time overall. All 'add package source' operations should be put before 'update package list', and all 'update package list' should be merged into one operation.