Server crashes during large package installation through SOAP

Hi,

We currently have problem to install large package through SOAP call which contains our custom schema definitions - currently XML package definition is a little bit bigger than 1.2 MB.

In logs we can find messages like

SRV-810019 The server process 'web@default' (pid=xxxxx) has unexpectedly crashed. It will be restarted. (iRc=-53)

when package was a little bit larger than 1MB then we had no such problems 

Any advice ? Thanks in advance