Should I trust my slow-to-start starter?

On 5/18/'10 I boiled about 1.5L of leftover (was frozen) wort to about 1.034. Cooled and pitched about 8oz of dense WLP001 slurry from Dec. '09. Nothing happened until this morning but now it is fermenting away on the stir plate with a good krausen.
It seems healthy but is it?
Can I trust my sanitation for those three+ days?
Are there any specific side-effects I might encounter if I use the yeast?

I was hoping to brew tomorrow and I do have a sachet of US-05.

Thanks.
Mike

Would you trust MY answer to this question? ???

I’d taste it and if it weren’t sour, I’d use it.  But that’s me.  If you’ll sleep better Safale 05 is a good yeast.

+1 to Brewark’s response.
Only you know about your sanitation.
I’ve had slow starts to starters many times and they have been fine.
As suggested, smell it and taste it. If it smells OK and tastes OK, its probably OK.
But S-05 is a good Plan B.

I guess what i meant was, would y’all trust your sanitation for that period. I did, and I pitched the full 1.5l at high krausen. I wanted to decant but you do what you have to. It is bubbling away as I type. Thanks for the help and sorry for the slow response.