crashing during the conversation

[subbu.rams]

OS- Microsoft Windows XP Professional
Version 2002
Service pack 2

Hardware = IBM corporatino Intel (R) Pentium (R) 4 CPU 3.00 GHz
2.99 GHz, 504 MB of RAM

Dear friends,

VLC Version = VLC 0.8.5(wxWidgets Interface)

Crash cituation -

i am receiving from one end through multicast with

Video codec = mp4v, bitrate = 192
audio codec = mp4a, bitrate = 16

During the conversation the vlc.exe error is coming automatically.

I have taken 1 MBps leased line.
network connectivity 99% coming.

Advanced Thanx.