Ubuntu 7.10 Gutsy slowdowns?

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I have installed Ubuntu 7.10 Gutsy dedicated, dualbooting WinXP on my laptop Fujistsu-Siemens Esprimo V5515. Got Bmx running on it oke.

Weird thing is all programs runs 25% slower than the windoze-version of BlitzMax on this same laptop.
I triedbefore, running Ubuntu via VMware (on my previous laptop) which worked great, all apps ran at 100% speed on that laptop.

To get Blitzmax to compile sumthing i followed the Ubuntu-guide posted a the sticky of this forum.
Could an error "/usr/bin/ld: warning: libstdc++.so.6, needed by..." be the reason for the slowdown?

Tech info;
BlitzMax version: 1.26

Building tempest
Compiling:tempest.bmx
flat assembler  version 1.64
3 passes, 45944 bytes.
Linking:tempest.debug
/usr/bin/ld: warning: libstdc++.so.6, needed by /usr/lib/libGLU.so, may conflict with libstdc++.so.5

Process complete