Hi rfriel.

I think I may have replied to this question in another thread, so I'm going to try a different answer, using the fancy new Internet thing rather than my own knowledge of contact lenses.

This is from allexperts.com:

"Much depends on where your lenses come from. Mail order/Internet order lenses may be exposed to extremely hot or cold temperatures during mailing. This will affect the structure of the lenses. Also look into where you are storing your lenses at home and if they may be exposed to temperature changes or even soaps & chemicals which may get on the case.
Also, if there is a recall on certain lot numbers, internet companies rarely send the lenses back.
Is is possible you received a defective box, possible, but highly improbable. If you are wearing 2 month lenses you can also consider 2 week replacements. 2 week replacements are the most common in the industry.
Other than those factors and your handling of the lenses, I can not think of anything which might be the cause."

I hope that helps.