strange globalization error

Hi People...

heres hoping someone has run into this scenario before;

I am trying to write a calendar maintenance page, as part of a larger web based app,

The problem: An exception is being raised in a globalization module;

thats not too strange, however the error only fires when there is a post-back from a link button !?

The error details are below..if that helps at all

thanks in advance..

Charli0

<ERROR TRACE
Exception Details:

System.ArgumentOutOfRangeException: Offset and length must refer to a position in the string. Parameter name: string1

Stack Trace:

[ArgumentOutOfRangeException: Offset and length must refer to a position in the string.
Parameter name: string1]
System.Globalization.CompareInfo.CompareRegion(Void* pSortingTable, Int32 win32LCID, String string1, Int32 offset1, Int32 length1, String string2, Int32 offset2, Int32 length2, CompareOptions options) +0
System.Globalization.CompareInfo.Compare(String string1, Int32 offset1, Int32 length1, String string2, Int32 offset2, Int32 length2, CompareOptions options) +54
System.String.Compare(String strA, Int32 indexA, String strB, Int32 indexB, Int32 length, Boolean ignoreCase, CultureInfo culture) +130
System.Web.UI.WebControls.Calendar.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
System.Web.UI.Page.ProcessRequestMain()

</ERROR TRACECould do with a code sample.

Is thething you're comparing loosing it's value on postback?