Yes mine has stood up well too.
Bought it in 2007 also with E6300 and 1GB RAM and the Radeon X1950 Pro graphics card.
I used this config for video capture and editing with Adobe Premiere CS3 and the Matrox RT X2 capture card. Using XP Pro as op system.
I recently upgraded to Adobe Prem CS5 which required Win7 and 64bit so needed to change.
Got 8GB ram and a new video card Nvidia GTX470. E6300 was still working but a bit slow so decided to go to the max and buy the Q9650 CPU.
All is working well and I figure I am set for a few more years until I upgrade again.
Trick is to get a new mobo which can support an upgrade path for a line of processors.
Thanks again for your help