fatal error with asort by opening an e-mail

Hello developers!

I just installed RoundCube from: package: roundcube-webmail repository: universe version: 0.1-20051021ubuntu1 on my box: AMD Athlon XP 2200 with 512 MB RAM Ubuntu 6.06 LTS "Dapper Drake" Apache 2.0.55 PHP 5.1.2 MySQL 5.0.22

If I try to open an e-mail, I get this message:

...

...

Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 10412 bytes) in /usr/share/roundcube-webmail/program/lib/imap.inc on line 1390 <<<

I looked at the file an found: 1387: // sort index 1388: $i=0; 1389: if ($flag=="ASC") asort($index); 1390: else arsort($index);

Maybe you can help me getting this fixed.

Yours faithfully

Christian (Chris) Beuschel