Two nice reminders about signals of management priorities:

Money is the primary indicator of management priorities...  "We really wanted to give you more to work with, but ..." "Please don't see this as meaning that you aren't important to us..." "This really isn't the year to make our move in your area..."  All these sincerely expressed and well-intentioned comments are designed to help you understand that management is putting resources in somebody else's basket.

Meanwhile:

when you hear your two o'clock appointment say, "I really wanted to meet with you on this today, but ...," you know what is happening.  When you hear a pattern of phrases like that from your management, you are being crowded out of their "work hole" by something they see as more important, or at least more immediate...  When you repeatedly hear, "It's important to me, too, but..," accept that your work is not considered important enough for them to do anything about right now.  Accepting this apparent reality might help you to decide whether you are going to do anything to elevate the importance of your work.

Both from Getting Things Done When You Are Not in Charge.

Neither signal should make you jump to a new job, but they should raise sensitivity for continued signals.

You usually get the first signal at an annual budget discussion.  It's perfectly appropriate to respond with, "What market or business conditions would have to change to justify a higher / full funding?"  Then, if those conditions occur, and you're still not being funded, run for the door; you're stuck in the hamster wheel.

The second one is trickier.  At some point, you probably have to raise the issue on your own.  "Not getting enough face time and attention to my projects is really hindering my ability to move it forward" or "I'm having a hard time convincing the team that the work is important when our meetings with management are constantly canceled."  Sometimes people don't realize the impact of their (in)action, and if you're competent, you're probably good at hiding the deficiencies.  If you have a good manager, she'll want to make sure you're happy and feeling productive, and will respond accordingly.  If not, that's usually sign enough for me that things will not get better.