Who says it works
A lot of the Pulseaudio problems at 8.04 were a result of the defaults changing for PA between 7.10 and 8.04, leading to people who had upgraded from earlier versions being left with an unworkable configuration. However, I do have an outstanding problem with Pulseaudio on my T30 thinkpad that has been documented, but never fixed.
It would appear that after suspend/resume, the re-sampling rate changes by about 5%. This results in the pitch of the audio changing, raising it by just less than a semi-tone. As it is playing the sound faster, it also leads to gaps of around 1/10 sec. every 2 seconds in the audio with gstreamer based programs when there is insufficient data to play. I have not found anybody who has been able to permanently fix this, and it is marked as unlikely to be fixed in the 8.04 defect database. I have a local workaround for 8.04, but I've not done the work to do the same on 10.04 (the whole suspend/resume system has been knackered by the introduction of KMS).
It's still there in 10.04, and this, along with a problem with older ATI graphics cards not being re-configured (again by KMS) correctly after suspend/resume (new defect in 10.04 - it's to do with the way KMS and udev tread on each other's toes during a resume), which has left me running 8.04 on my main laptop.
And before anybody says I should get a more modern laptop, my T30 works just swell - why should I change!