Strange exception occurring on IE7 and not on IE8

Here is the trace of the error from the system log:

Event Type: Error

Event Source: .NET Runtime 2.0 Error Reporting

Event Category: None

Event ID: 5000

Date: 17/07/2011

Time: 13:11:56

User: N/A

Computer: WORKSTATION

Description:

EventType clr20r3, P1 iexplore.exe, P2 7.0.6000.17055, P3 4bc5e60e, P4 mscorlib, P5 2.0.0.0, P6 4a7cd8f7, P7 35f9, P8 444, P9 exception, P10 NIL.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Data:

0000: 63 00 6c 00 72 00 32 00 c.l.r.2.

0008: 30 00 72 00 33 00 2c 00 0.r.3.,.

0010: 20 00 69 00 65 00 78 00 .i.e.x.

0018: 70 00 6c 00 6f 00 72 00 p.l.o.r.

0020: 65 00 2e 00 65 00 78 00 e...e.x.

0028: 65 00 2c 00 20 00 37 00 e.,. .7.

0030: 2e 00 30 00 2e 00 36 00 ..0...6.

0038: 30 00 30 00 30 00 2e 00 0.0.0...

0040: 31 00 37 00 30 00 35 00 1.7.0.5.

0048: 35 00 2c 00 20 00 34 00 5.,. .4.

0050: 62 00 63 00 35 00 65 00 b.c.5.e.

0058: 36 00 30 00 65 00 2c 00 6.0.e.,.

0060: 20 00 6d 00 73 00 63 00 .m.s.c.

0068: 6f 00 72 00 6c 00 69 00 o.r.l.i.

0070: 62 00 2c 00 20 00 32 00 b.,. .2.

0078: 2e 00 30 00 2e 00 30 00 ..0...0.

0080: 2e 00 30 00 2c 00 20 00 ..0.,. .

0088: 34 00 61 00 37 00 63 00 4.a.7.c.

0090: 64 00 38 00 66 00 37 00 d.8.f.7.

0098: 2c 00 20 00 33 00 35 00 ,. .3.5.

00a0: 66 00 39 00 2c 00 20 00 f.9.,. .

00a8: 34 00 34 00 34 00 2c 00 4.4.4.,.

00b0: 20 00 65 00 78 00 63 00 开发者_如何学C .e.x.c.

00b8: 65 00 70 00 74 00 69 00 e.p.t.i.

00c0: 6f 00 6e 00 20 00 4e 00 o.n. .N.

00c8: 49 00 4c 00 0d 00 0a 00 I.L.....

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My guess is that it is not a difference between IE7 and IE8.

The difference is that the requests are coming from different machines.

On the machine where it works the site is a trusted site. On the machine where it does not work the site is in the internet zone.