Though Google may have fixed two infamous SMS issues via the recent Android 2.2.2 and 2.3.2 updates, it appears at least one bug is still unconquered. Namely, some users are reporting that when they tap on the "New Message" alert in the notification bar, all their SMS conversations get deleted.
Our tipster experienced this on his HTC Desire Z, but he tells us that two of his friends - one using a Nexus One and the other on a Galaxy S - have come across the same bug. Additionally, several Google Code users have encountered this issue on their Motorola Droids, Droid Incredibles, EVOs, and other Android devices. It isn't exclusive to certain versions of the Android OS, either - we've seen reports of it happening on 2.0, 2.0.1, 2.1, and 2.2.
Unfortunately, the issue's priority is still "Medium" on Google Code, despite the fact that it was first reported there in December of 2009. Like the previous two SMS bugs, this isn't some small nuisance; it is a pretty major problem that Google needs to fix as soon as possible (preferably in the next Android update).
Let's hope they can accomplish this - you can do your part by voting for the issue on its Google Code page.
Source: Google Code