Some uh yeah, I love you both forever and ever and ever. And if I don't outwardly show my undying and perhaps even maniacal adoration for you both, know that as I enjoy the many hours of literary nirvana you both have restored to me, I am having warm, squishy, lovely, bubbly thoughts of you and am smiling in ecstasy.
As you should have already surmised by now, my reader is working properly again. At first, I was highly skeptical about your advice working, because I had turned it off a few times, during this laggy page problem. It didn't seem to do anything all the other times before. But then, I thought of something. Every time I did shut it off, it was only for long enough to reboot it, or to plug it in to recharge. I tend to leave it plugged up, especially while I am doing my reading marathons. So, this time when I shut it off, I left it off the charger as well. It remained off and unplugged, until about 20-30 minutes ago. Roughly over 12 hours, I think.
Scrambled some eggs to go with my fried rice, as it booted back on, and then squeezed my eyes tightly closed as I prayed this worked. Loaded a random book into the reader, and peeked through one eye as I hesitantly and with much trepidation reached over and pressed the page forward button. Didn't even realise I was holding my breath, until it whooshed out my mouth in an exultant whoop of joy. The page turned as fast and smoothly as the day I first unboxed it. Oh the magnificent beauty of this wonderful feeling of success. I'd roll around on the floor basking in the glow of my pure delighted bliss, but fear I may break my PE in my over exuberance.
So, again you two beauteous paragons of patient and kind understanding helpfulness... I love you, I adore you, I'm mentally bowing down and kissing your feet as I crawl on my knees and worship the divine nature of your beings. Have I smothered you both in enough platitudes to convey my gratitude yet? If not, say the word, and I'll whip out a thesaurus and begin composing an ode to your magnificence, that would make even Shakespeare green with envy.
Okay, enough already, I am an ass. I know it and enjoy it, but it doesn't mean I am not sincere in my gratitude.

I really do appreciate your help, both of you. You have returned to me one of my greatest enjoyments, and I am ever so thankful for all your assistance.