If so, you should be on PGP Desktop 10.1.2 and later. We are adding enhancements to support SSD drives. Also the newer i5 and i7 processor have the AES-NI instruction set which the new versions of PGP Desktop (I believe 10.1.1 and later) take advantage of. The Intel Atom processor doesn't have those.
Also, when you look at crypto technology, and the way that it works when using full disk encryption. It is less surprising (unfortunately) that an Intel Atom processor takes 4 times as long to read/access the data on the machine. As an example, look at this benchmark that is being done by Tom's hardware where they compare the Intel Atom processor to the cheap/budget cpu's like Pentium E and Celeron processors:
http://www.tomshardware.com/reviews/intel-atom-cpu,1947-8.html
The atom processor is designed for acceptable performance, while running very basic tasks such as web browsing and a little bit of word processing, those types of things. It's NOT EVEN CLOSE to the same performance that you can expect from an Intel Dual Core or Quad core CPU.
Can you please report what version/build number of PGP Desktop you are running on the machine currently?
Thanks,
PGP_Ben