Hey I've read thru this thread n unfortunately I have a similar problem.but apparently, I can't even seem to download any apps after I had sync'd my iPod touch 3G to iTunes.everytime I download from installous,the downloaded file would not appear in my download section. N it also says it can't install the downloaded file cz it can't find the location of the file after the download has been completed.god,this is really hard to explain,hope u guys understand n would b able to help me out.Somehow I feel this has something to do with syncing n iTunes.would really appreciate it if anyone could help me.thnks