Thunderbolt display problems using MBP with lid closed

I am experiencing a very reproducible problem since purchasing aThunderbolt display to use with a recent (1 month old) Macbook Pro 13"2.7GHz i7.
I use my MBP with lid closed with myThunderbolt display. If Ithen allow the MBP to sleep and power down, on restarting it the WiFi hasstopped working- the menu bar says I am connected by WiFi but Safari will notconnect to the internet and Time Machine cannot connect to the Airport/TimeCapsule to backup. Nothing I do will fix it (shutting down all programs, turingWiFi off then on) and so I have to shutdown/reboot BUT THEN the MBP freezesduring shutdown (waiting 15, 20, 30 minutes!) and I have to hold down the powerbutton (hard reboot). Once I reboot everything works fine UNTIL I take a breakand the computer goes to sleep again.
Doesn't seem to be a problem with the MBP lid open, but I needto test this a bit more to be sure...
On top of this the Bluetooth trackpad now keeps going on andoff; connected, not connected despite being near or the computer. Veryirritating at best, unusable at worst. This only started to be a major problem(every 10-15 minutes or so) when I started to use the Thunderbolt display.
These problems seems to be in some ways similar to anotherthread:
https://discussions.apple.com/message/16205098#16205098
("Major problemswith Thunderbolt display & MBAir")
I have applied the recent Thunderbolt Firmware update, and SMC& PRAM/NVRAM resets. Interestingly these seemed to work initially but thenafter a prolonged power-down period the problem has recurred. Back to square 1.
Any ideas out there?

Just to be clear, have you installed everything that you find on this page?
http://support.apple.com/kb/HT4644
I just talked to Apple Care about Thunderbolt issues in general and even though I already had the Thunderbolt Software Update installed, he had me reinstall it. If you go to this page:
https://discussions.apple.com/message/16889000#16889000
you can read in detail about the issues I was having which have for the most part been remedied (for now at least!)
The Thunderbolt cable definitely transfers heat for some reason even when there isn't a high CPU utilization. The process 'kernel_task' seems to be where the API for thunderbolt is running. But for some reason, the behavior of CPU Utilization to Fan Speed is amplified when connected to the TBD.
Apple Care is researching it.

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I'd like to use my MBP 13" for iTunes that powers my remote speakers and airTunes etc.
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I've read on these forums about Clamshell mode? But I can't find any more information about how to set it up?
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Your MBP is not an iPod, and it will be in serious danger of overheating if you pack it away in an enclosed space (especially an enclosed space that contains other heat-producing equipment) while it's running. If you insist on doing so anyway, you'll need the aid of a third-party hack that prevents sleep, such as Caffeine or InsomniaX. I don't recommend this at all.
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http://support.apple.com/kb/HT3131

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Download an run memtest to check your RAM.
http://osxdaily.com/2011/05/03/memtest-mac-ram-test/
www.memtestosx.org/downloads/memtest422/Users_Guide.rtf
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So my MacBook (early 2009) was in sleep mode when I put it on my desk, plugged it in, then plugged in my monitor. The monitor turned on and my desktop appeared, with the menu bar and dock on it. When I normally use a monitor with my MB, the MN screen is my main screen. Obviously it woke up when I plugged in the monitor and USB mouse. My question is, can I use it like this all the time? I prefer to use the external monitor as much as possible, and being able to close the MB lid when it's on my desk would save a lot of room.

Here is the link to what Lyssa mentioned...
http://support.apple.com/kb/HT3131

I REALLY need to use MB with lid closed...

Sleepless doesn't work after the upgrade, does anyone know of ANYTHING that will work right with this new update? I'm not using external keyboard/mouse btw.. thanks!!

Are you trying this when the Mac is in motion, i.e., in your backpack? If you move the machine much when it is awake, you risk killing your harddrive. If you are trying this with the Macbook on a desk, just leave it open.
Leaving laptops (eps. Macs) on and closed keeps heat from espcaping the way it is supposed to, possibly damaging your system. Apple designed their machines to sleep when shut for a reason.
Just go buy a Nano.
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Will this be a problem heat wise?

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I'm interested in this issue too, as I intend to get an MBP but use it with an external screen and keyboard most of the time.
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My Macbook Pro (OS 10.4.11) always randomly wakes up by itself after I closed the display lid. Is there anything I can do to remedy this? Thanks.

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I am a newbie, so please excuse me if this sounds like a dumb question. I just moved from Windows world (after using it for 25 years) to MacBook Pro about 4 months ago.
I am using AiportExpress to stream music from iTunes to 3 different audio system throught my home. I would like play iTunes to play the music even when my MacBook lid is closed. I can't seem to get this work. Seems like such a basic function. Is it possible to play iTunes with lid closed? What am I missing?

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Thunderbolt display problems using MBP with lid closed

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