SekeRob, it's quite simple really - I've got 2 laptops (and thus, temperature comes into play), and whilst my newest computer is ~ 2 years old, my other is approaching 7. Also, I do use both computers - and therefore, at the best of times, I'm able to get (according to SNURK's signature), around 5.5 days CPU into a 24 hr period. As to me struggling to get to Gold, that's because I left it late to return to this project (I've been concentrating on HSTB - whilst there's been work flowing).

Finally, what also comes into play, is that, even though I may have 280 WU's currently cached (the limit I'm allowed), if those run on average, for 1 hr, that's only 280 hrs - whilst if I'm needing ~24 days to reach Gold, that's 576 hrs, and hence, 296 hrs short. If those WU's average out at 2 hrs, then I'll be ~16 hrs short. Obviously, I'll only know for certain as to how long those cached WU's take, after the event - and therefore, my uncertainty as to reaching Gold before the flow of WU's (and my cache) runs out.