Maybe I'm being a bit rash. It just seems like these tubes aren't very reliable at all.

Here's the check off list:

Always inflate to 110-115 psi before every ride (5'8" & 143)
Tires still have enough tread that the contact points have "tracks" (Michelin Orium)
Walk the bike over the metal gate's track (Apt complex)
Watch for road debris
Try to use a steady line (no rash movements sideways)
Try to avoid crazy, bumpy roads (during which both Specialized and CST survived today)

I know the first puncture was cause by a thorn (understandable), but the second one... I have no idea. Almost a flat neighborhood road and then suddenly "pssss"

When replacing the tube do these:

I visually inspect the outside tire and listen for the spot that is affected
Isolate the spot and look to see what cause it
Take off the outer tire and run my finger on the outside and inside
Check to see if the rim tape is funky in any places
Put the outer tire back on and carefully put the inner tube in (no knots, twists or grabs)
Pump up the tire and put it back on the bike (when on the road I can usually hand pump it up to 90psi or so)

Could it be the tires are old? Sometimes I feel like I'm getting what I paid for them~ $5. The Specialized were $9 and the presta valve is really nice (absolutely no fidgeting required; made out of a silver metal rather than the CST's bronze metal).