I have a 2007 Imac desktop 20" version 10.6.8 (2.4GHz Intel Core 2 Duo. - Apple Computer MA877LL/A), I am unable to download my footage from my 7D Canon without it taking 10-12 hours at least. I have 2 GB of memory, and have just purchased 2 more GBs, but will that solve the problem? I want to know if anyone else has ever had this problem? I Bought my computer from gainsaver refurbished, and it works great for everything except downloading footage and editing. any help/troubleshooting would be appreciated!