Unless you notice a bunch of inconclusive results becoming marked as invalid, you shouldn't need to worry about this. It simply means that the validator didn't find a strong enough match between results for the task. In your particular case, the other result is an overflow of 30 auto-correlation count, which I would say is more likely to be invalid than your result.

---

Soli Deo Gloria

It's a perfectly valid question, don't feel ashamed to ask.

In your case, I saw this task being marked as inconclusive. Your computer returned these results:

Spike count:    2
Autocorr count: 1
Pulse count:    2
Triplet count:  0
Gaussian count: 0

...while the other computer returned this:

SETI@Home Informational message -9 result_overflow

Spike count:    0
Autocorr count: 30
Pulse count:    0
Triplet count:  0
Gaussian count: 0

In the majority of cases I've seen, the overflow result is the invalid one, so I think it's safe to say your result is correct.

---

Soli Deo Gloria

And if you take a look at that other computer's tasks list you'll see that it produces a lot of invalid results. ;-)

Cheers.