I'm running very low on interal phone memory storage - I'm down to 5 MB of the 180 MB available. I understand that not all apps can be installed into SD card, and those will instead use up my internal storage. Luckily, those are rare.
However, I recently installed an app that is listed as being installed on the SD card, not internal storage. Even so, after installing it I'm now getting the "low on space" warning. The app takes up 16 MB, and I seem to remember I had a bit over 20 MB internal storage space before... So judging from the space, it looks like it's still taking up space on internal storage.
So my question: Should an app that's installed onto SD card take up any internal storage?
What could be causing this? Does the market store the installation files somewhere in internal cache or something as weird? Why on earth do I need to worry about apps consuming space, when I have gigabytes of free space for them on my SD card?
My device is GT-S5570 running 2.2.1.