Weeeell... got it back today and it is EXACTLY THE FRICKING SAME.

I gave a detailed enough note as to the problem, but the repair sheet only says, "replaced slide module. unit fully testet and passed live on air test (mic, earpiece speaker, vibrotor and ringing tone all tested ok), unit charging through USB port okay handset meets all manufacturer specifications.

So, it goes back tomorrow again. *sigh*