MacBook Pro slow to wake from sleep after installing SSD

I have an odd problem with my early 2011 13" MacBook Pro (2.7GHz Core i7, 8GB memory). I'm currently running Mavericks, but had the same issue under Mountain Lion.

Some months ago I replaced the original 500 GB hard drive with an SSD, a 480 GB SanDisk Extreme II. It works perfectly and the computer seems lightening fast by comparison, except in one respect: when waking from sleep mode, there is a delay of about 30 seconds before the computer comes back to life. Without going into the details of my trouble shooting path, I'm as certain as can be that the problem is associated with the SSD. In fact, I replaced the original SSD with a new one of the same make and model, and the delay persists. I've tried cloning and swapping the HD and SSD in various states, and the result is alway the same: no delay with the HD, a ~30 second delay with the SSD.

I have my computer set to require a password on waking, and the delay takes either of two forms. Either (1) there's a wait of about 30 seconds before it will accept my password, or (2) it will accept my password, but after I type and enter it there's a delay of about 30 seconds before the password screen disappears and the computer becomes usable.

At this poin, I'm about to reinstall the HD, since the snappier performance of the SSD doesn't compensate for the aggravation of waiting for it to wake up after sleep.

I'll welcome and thank you for any suggestions on a fix.