Hi all
I too have been having this same problem, everything syncs just fine except Contacts......or is there a problem???
If I check Data Synchronisation for Google it reports that my Contacts haven't upated since October last year and sure enough if I try a manual sync it fails every time (3G and wi-fi). However I noticed just today that although it's reporting this fail, when I logged into Google mail from my PC and checked my contacts (I as planning on updating them manually just in case) they were bang up to date from my Hero.
As a test I created a 'Test' contact, manually sync'd Google (over 3G and wi-fi) and once again got the fail message. Now Contacts on my PC didn't update immediately before my eyes but a couple of hours later the 'Test' contact is there in my Google mail account altough my Hero still reports it hasn't successfully sync'd since last year.
Anyone fancy testing the theory? Let me know if you need any more info.
Of course this isn't a total success for me as my Hero is still trying to sync the Contacts continuously (as it thinks there's a problem) which is eating my battery. I might turn auto sync off and hope that the next OS update solves the problem for me.
Thanks,
Steve