I quite like the initial idea, though I'd use a background on the type rather than a stroke (the outline is beginning to 'dip' in the center of the X) and I'd move "Creative Labs" further away from the main name.
Hi Oliver, welcome to the forum. Like the others I like the idea, but I'm not bowled over by it. But I'd start by moving the 'Creative Labs' down a little more. So that there is the same gap between the 2 lines that there is underneath the P and X.
Unless I'm missing something, I don't see any relevance between the logo and your name. If you're called 'Postbox' your logo should reflect that in some way. Or don't call yourself Postbox.
Personally for me now, I think the logo looks very heavy at the bottom. This could be owing to the movement of the creative labs.
I'd be extremely tempted to notch all the text (including the surrounding area) up a few pixels.