Similar Issue with HTC Desire HD
HTC had my phone (Desire HD) for two weeks with a screen problem.
When it arrived back from repair yesterday I was dispapointed to find that it was still faulty and all they did was flash the phone.
UPS are collecting the phone today for the second time and I have been told that HTC could have it for another 20 days. The phone was 5 weeks old when the fault began. Who knows by the time this is finished HTC might have the phone longer than I have had it.
So sorry I did not go for Samsung Galaxy S.