I noticed this change with the new OTA update we received.
With v3.0 - whenever emails were deleted, the TPad was quick to respond and never tried to display an email in the third pane on the right. It was easy to consecutively delete emails.
With v3.0.2 - whenever emails are deleted, the TPad automatically selects the message above the one deleted and attempts to display it in the third pane. The device hangs up for a few seconds until the next message has been displayed.
I wish HP would resume the previous behavior. There's times I need to delete several emails without reading anything and this behavior slows down the process. Especially if I get nailed by some Russian spammer (like last night). The new behavior also causes lag and the potential for the wrong message to be deleted.