OK, Being a bit new to 6spd boxes here's my tuppance worth..
I bought my Bora about a month ago, 83K miles not a problem me thought as I had owned a TDI 110 from new and did around 120K miles in it.
Hmm Gearbox shifting from 1st to 2nd CRUNCH if you were not SLOW and deliberate!!
This goes away AFTER the car has been driven a couple of miles (me thinks 2nd hand car dealer drove the car around before I test drove it....)
Rang my local ('friendly') VW garage, spoke to my usual guy in Service, he said that the first thing to do would be to replace Gearbox oil with 'Taff-ex' Spelling I am not sure about, and he would sell me the required amount if I brought in a 5litre container.
Havn't done this yet as my car went in for another problemette, and when I got it back the engineer's report said : 'Dragging clutch'....
Hmmm and the quote to fix this was something like £480 or £540 hmmmm
Think I will try the Oil option first, and he did say there were some 'adjustments' that could be done on the linkage to alleviate the problem (he seemed to know a lot about the problem, so I thought perhaps it migth be quite common).