I would say that it very much depends on the problem and how much of the solution you can address without your boss's assistance.
For example, with the meeting notice. If you are talking about a regular meeting, you can ask the originator to add you to the cc list (I assume you are referring to a meeting that your boss is supposed to attend, not a meeting that you are supposed to attend). If they do that, no need to tell the boss, as the problem is solved. If the person won't add you, then you need to talk to your boss and advise them that you don't have the ability to correctly input meetings because you are being left off the distribution list, but go there with proposed solutions (such as: bossie requests to add you, bossie sets up a rule to forward those emails to you, bossie is responsible for adding or deleting those meetings from his own calendar, etc.).
On the other hand, sometimes by looking at a problem, you realize that it could indicate a larger more general program. The issue of someone else deleting files for example, might point to the need for some moderation of the folders where people have access and a system for preventing that from happening.
So my general advice would be:
- If it's a small problem that you can take care of without involving your boss, do so.
- If it's a large problem that you can take care of without involving your boss, do so, but advise the boss in writing of the problem and how you resolved it.
- If it's a large problem that you cannot take care of without involving your boss, involve your boss, but also have solutions and suggestions ready to offer for how to resolve the issue.