I experienced that same issue.

On Mon, Jul 25, 2011 at 2:13 PM, Dave Canan <ddcanan AT gmail DOT com> wrote:

> Let me pose this to the listserv here. Are others also having this problem
> when listening the to Technical Exchange sessions? If this is isolated to
> just Thomas then it might be an issue on his side. If there are multiple
> people here, please let me know and I can bring it to the attention of the
> group that hosts these. Please let me know.
>
> On Mon, Jul 25, 2011 at 9:12 AM, Thomas Denier <
> Thomas.Denier AT jeffersonhospital DOT org> wrote:
>
> > -----Dave Canan wrote: -----
> >
> > >Thomas, I can follow up with this. Do you have some specific examples
> > >of some webinars that were bad recording quality? Let me knoiw via the
> > >list, or you can also send me an email to my work ID at
> > >ddcanan AT us.ibm DOT com.
> >
> > I had trouble with the webinar on using HADR to replicate the TSM
> > Version 6 database. I don't see how recording quality could be an
> > issue, since I was listening to the presentation in real time
> > rather than listening to a recording later on. As I recall, the
> > webinar started with a moderator introducing the main speaker.
> > The introduction started off with poor but not intolerable audio
> > quality and gradually deteriorated until I recognize about one
> > word in five. I hung around to see if things would get better when
> > the main speaker started. The audio quality did not improve when the
> > main speaker started. I gave up on listening to the presentation
> > and settled for reviewing the slides.
>