I lost mail during the major downtime. Mail HARD bounced and didn't just SOFT bounce (I know the difference). The tech support folks admitted this, but tried to brush it off in their usual annoying way, saying that this only happened in the morning (as if that makes a difference). Yesterday, there was some sort of error with the system disks filling up, so messages SOFT bounced (452 errors).
Unfortunately, on some systems, like YahooGroups, soft-bounces are not redelivered, so you have to figure out what you missed and read from the web site.
The only reason I haven't canceled my account is because of the community of other DreamHost people whose comraderie I value. DreamHost better wake up. If enough of us get tired of the BS, there could be a mass exodus to a new system that delivers without excuses and does it at the same price.