I have this macro that typically ran from 12-15 minutes in Excel 2003. There
is alot of computations, and moving data(small data) around. On a similar PC
it takes about 60-70 minutes when it runs on Excel 2007 with SP1.

Other smaller macros take about the same time in both Excel 2003 & Excel
2007. This has me perplexed.

Any ideas ?