It just keeps getting worse for RIM, but when you rush a product to market that isn’t finished, you have to expect a backlash.

[ad#Google Adsense 300×250 in story]RIM has reportedly lowered the internal sales estimates of its PlayBook tablet after slower than expected sales. DigiTimes reports that targets have gone from 2.4 million units for the second quarter to as low as 800,000 units.

During its fiscal first quarter, RIM announced shipments of 500,000 PlayBooks. I’ll stress again, those are shipments from RIM to the channel — that doesn’t mean that they actually sold all of those tablets. For all we know, they could be sitting on retailer’s shelves.

RIM didn’t get a full quarter to sell its PlayBook, but as a point of comparison, during Apple’s second fiscal quarter reported in April, it sold 4.69 million iPads.

[Via BGR]