Is processing procrastinating?

[Howard]

I have just spent half of Sunday pruning out my action lists and projects. Those items that I haven't Somedayed I have deleted. Amongst them have been quite a number of actions and plans that never got done and that were important a little while ago.
Now, I admit that I have not been reviewing as often as I should; my business is going through a big change and overwhelm has been setting in. On top of that has been the inclination to do rather than plan and review. But, those personal failings apart, I am a bit worried about the tendency of the GTD method to waft important tasks into ever extending action and project lists, which consequently become increasingly difficult to access and deter the GTD practitioner from actually using the resulting, impossibly long lists.
There you are with your long list of emails, phone messages, ideas and other assorted demands, and you get out of that tight corner by processing. You toss, file, do (if in less than 2 minutes) or create a project or a next action...and I sometimes feel - it's just too easy. I often have worried as I defer or create an action that it isn't actually going to get done.
I am going to try a couple of new techniques to handle this situation but I'd be pleased to hear what other people think about it and how they prevent it.