SQL Server Error 7884, systemlog BY4, short dump DYNPRO_READ_FAILED

Hi,

Since our hoster moved from SQL2000 to SQL2005 (ECC 5.0 system) we are getting every few days the following error in different transactions:

st22:

DYNPRO_READ_FAILED

It's everytime the screen SAPLV50E but everytime different number e.g. 0770

sm21:

11:24:07 DIA 000 010 DELG10       ME21 BY4 Datenbankfehler 0 beim SEL-Zugriff auf Tabelle DYNPLOAD  aufgetreten

11:24:07 DIA 000 010 DELG10       ME21 BY0 > [-1] Session Provider: Connection has been closed by peer

11:24:07 DIA 000 010 DELG10       ME21 BY0 > [xFFFFFFFF].#[-1] Communication link failure#[-1] Session

11:24:07 DIA 000 010 DELG10       ME21 BY0 > Provider: Connection has been closed by peer

11:24:07 DIA 000 010 DELG10       ME21 BY0 > [xFFFFFFFF].#[-1] Communication link failure#[0] Protocol

11:24:07 DIA 000 010 DELG10       ME21 BY0 > error in TDS stream

SQL Server Fehlerprotokoll:

Nov 10 2009 11:24AM spid85 Error: 7884, Severity: 20, State: 1. (Params:). The error is printed in terse mode because there was error during formatting. Tracing, ETW, notifications etc are skipped.

Any idea about a possible cause? Unfortunately we can't reproduce the error.

Thank you in advance!

Kind regards,

Frank