I too am suffering from the same iplayer failure on BDP s370 running latest M03.r.769 firmware. Problem started around 14th Feb which seems to have been when the Beeb did some kind of update. Using O2 broadband (6mbps+) and no issues with other streaming services (eg. lovefilm), Is this an O2 isse, a Sony issue or a Been issue? Would welcome a respose from Catmambo when he gets a chance. 

Both BBC iPlayer and Demand 5 are now working fine on my BDP-S185.

BE broadband forum reporting that traffic has been re-routed as a fix for this problem.

Hopefully will be sorted for O2 users also as part of same company.

Strange thing is, it would always work on the PC, even BBC HD on iPlayer was fine. Just the Sony had problems.

Hopefully the fix will be permanent.

I have been putting up with this same i-Player stalling/buffering problem for some time.  Very frustrating.  I see that this thread is quite old.  Is there a resolution?  I have a Sony BDP-S570 Blueray player running software M04.R.878 over a Homeplug network.  ISP is TalkTalk and I normally get download rates of ~10Mb.  I have an X-box connected to the same network and TV and have no problems with this at all with i-Player.  PC on the same network also has no problems.  I would use the X-box if it wasn't for the inferior picture quality and rubbish interface compared with the Sony.  I've had the player for some time and this certainly wasn't an issue when a first bought it.  Is there a fix?  Software/Firmware update?

Same here

BT infinity giving 37 Mbs

Fine on the computer, but keeps freezing / buffering on the Sony Bravia TV

Been bad the whole weekend

Not good

Just an update from my end -

Ended up switching from O2 to ADSL24, around 9months ago, and have not had a single problem with buffering since.

I had wondered if this was coincidence as the forum went quiet around the same time, but there seems to have been a recent resurgence in these posts and I've not had any issues.

The interesting thing is I'm on the 'Premium LLU' service which uses the O2/BE/Telefonica hardware at the exchanges, so theoretically the physical setup should be exactly the same.

This seems to suggest the problem lies specifically with O2 - they must be doing some sort of shaping/throttling, which seems to be at odds with their 'The Works' policy in this.

Like toml220, I'm on O2 Works package, and have been suffering buffering on their un-throttled servcies, ever since I bought the BDP-S370 player almost 2 years ago.  SD streams are OK 95% of the time, and even HD pre-buffers a big chunk quickly and then randomly drops the connection, so it makes sense that it's a network saturation issue.  Apparently it's affecting O2 and Be (same company) but I bet other ISPs are having similar issues.  Whether it's the Akamai service itself that's saturated or connection from Akamai to each ISP, then it's still the ISP that has to resolve on your behalf.  However, given that iPlayer is a third party free service, you'd have a job trying to demonstrate that your ISP has any kind of responsibility for resolving these issues.  You could threaten to leave, of course, but then if your new ISP is no better, you're still stuffed.

Until fibre optic is the standard this is just something that is the norm , bearing in mind how many other devices both mobile and fixed are dragging on the system. I've got BT option 3 and over the past week the bandwith has'nt been there to support HD streaming