Phoenix, we've chatted before (im sure you remember! i really did want to chat via email but lost the thread - if you still want to my addy is misscutandstickatyahoodotcodotuk)
Its brill that your DS is now doing the odd 2 signs!!! what wonderful news! We are still are at the one sign and not really requesting but naming and commenting - but we have the rare request like 'apple' and 'shoes'... isnt it strange how alike they seem to be?
Our SALT seemed to think that the reason that DS5 didnt babble either is due to Oral Dyspraxia - but he can drink from a cup, suck a straw, blow a candle and his latest party trick: pucker for a kiss (well nearly ), so the SALT is very hopeful. DS5 has almost mastered pointing too, just recently!!! (hes 2.11y). DS5 has Fortnightly SALT, for 1hour. But i really dont think its doing anything for him at all. Portage however, is brill and its done wonders for him.
DS5 has had hearing checks too, and his is fine also. DS5 understands about 40 single words, but has very little understanding on the whole. Our Paed too thinks that ASD is NOT the problem, but wont offer a guess as to what is. The geneticist seems to think that it may be a minor chromosomal problem due to the lack of understanding, or learning difficulties.
As to what as already has been said (WRT brain damage) - DS5 was a homebirth, and as lovely as it was, it did have one minor hiccup...
The labour went as it should until just at the point at which he should have arrived (being number 5, i know when he should have arrived), BUT (WARNING TMI!) he got stuck behind my cervix (OWWWW!!!) and 2 contractions later he still hadnt arrived and a small trickle of blood started - the MW assumed that the placenta was peeling and she eased him back in, 'unhooked' my cervix from where he was stuck, and delivered him in the next contraction. Labour was 7am (waters going) DS5 arrived at 11.10am. so if brain damage occured it cant have been much (i say naively ). I dont know if it had any bearing on how he is, or not, but i wanted to mention it anyway. Our Paed has never seen DS5's birth notes...I kept them, or the very little that was written at the time.
Oops sorry seem to have rambled a bit