Bitcoin-Qt crashes on RPC connection

I'm currently using 0.6 beta, and every time i enter an RPC command, bitcoin-qt immediately crashes.

This happens with accessing the RPC via browser.

Code:

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Microsoft Visual C++ Runtime Library
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This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.


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OK   
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Code:

Problem signature:
  Problem Event Name:	APPCRASH
  Application Name:	bitcoin-qt.exe
  Application Version:	0.0.0.0
  Application Timestamp:	4d44aa00
  Fault Module Name:	bitcoin-qt.exe
  Fault Module Version:	0.0.0.0
  Fault Module Timestamp:	4d44aa00
  Exception Code:	40000015
  Exception Offset:	00ebc3ea
  OS Version:	6.1.7601.2.1.0.256.1
  Locale ID:	1033
  Additional Information 1:	910b
  Additional Information 2:	910beedc1d41ba8c810a50015230ee33
  Additional Information 3:	4ebe
  Additional Information 4:	4ebe43d9f5586f23206b9b33d5f93f12

Read our privacy statement online:
  http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
  C:\Windows\system32\en-US\erofflps.txt

as well as issuing a RPC command from bitcoind

Code:

Problem signature:
  Problem Event Name:	APPCRASH
  Application Name:	bitcoin-qt.exe
  Application Version:	0.0.0.0
  Application Timestamp:	4d44aa00
  Fault Module Name:	StackHash_0a9e
  Fault Module Version:	0.0.0.0
  Fault Module Timestamp:	00000000
  Exception Code:	c000001d
  Exception Offset:	0705e138
  OS Version:	6.1.7601.2.1.0.256.1
  Locale ID:	1033
  Additional Information 1:	0a9e
  Additional Information 2:	0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:	0a9e
  Additional Information 4:	0a9e372d3b4ad19135b953a78882e789

Read our privacy statement online:
  http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
  C:\Windows\system32\en-US\erofflps.txt

bitcoin.conf

Code:

rpcuser=user
rpcpassword=pass
upnp=0
server=1
rpcallowip=192.168.1.*