Paypal and Safari cart empties itself randomly

[Violet13]

Testing my very simple store front - I have 4 items for sale - the paypal shopping cart will empty itself when greater than 6 items are in the cart. 

Lion 10.7.4

Safari 5.1.7

I've tried various cookie settings, Preferences > Privacy > Block Cookies = Never

I've also tried resetting Safari and clearing the cache.

Nothing remedies the solution. Plus I can't expect customers to have to reset their browser or know how to empty their cache, etc.

There's a thread started last year on the Apple Support forums that is still actively receiving posts of the issue: https://discussions.apple.com/thread/3062796?start=0&tstart=0

But so far no one has posted a fix or workaround. Hopefully someone here from PayPal can advise.

[brewhardware]

My customers complain about it often as well.

[Violet13]

Essentially this means anyone on an iPad or iPhone or mac desktop can't really use your store. Unbelievable there's no PP response and this has been reported as far back as last year.