Fans on full speed when connected to TB-display

Whenever I'm using my thunderbolt display, the fans in my MBP (early 2011-model) goes up. Every 10 minute or so they ar on full speed (6200rpm), no matter what. It happens even when I'm not using any software, just watching my desktop
When checking iStat or Activity Monitor everything seems normal except for the fans.
Typical scenario every 10 minutes or so:
CPU:
User 3%
System 2%
Idle 95%
Fans (both left and right):
5800 - 6200 rpm
System:
Processor 2.2 GHz Intel Core i7
Memory 8 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6750M 1024 MB
Software OS X 10.8.3 (12D78)
Solutions I have tried without success:
- reset SMC
- reset NVRAM and PRAM
- clean install of OS
- both open and closed lid
Any tips/help?
H.

The temperature is about 145ºF like yours, so maybe it's normal. I have tried with both the lid closed and open.
What I find strange, is that my colleagues (all with basically the same set-up as me: MBP and TB-displays) dont have this problem. They have both older and newer MBPs than I have. We all work with the same kind of work and software.
Yesterday I also tried to connect my MBP to a normal PC-monitor (minidisplay -> VGA) and still the fans went crazy. I can't remember having any issue with before, and as I said: I am the only one in my office that have this issue.

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The community works together, click Accept as Solution on the post that solves your issue for other members of the community to benefit from the solution.
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