Problems with graphics programs

Hi.
I am running Mageia 2 on an Asus X59GL which has an nVidia graphics card. In order to install the distro successfully, I had to disable noapic because of BIOS problems. However, this may be causing various problems with graphics programs:
GIMP: There are two problems here:
1. The FX filters are completely missing, as is the Deconvolution filter under 'Filters - Enhance'.
2. More seriously, the 'Save' screen often freezes, and I cannot save to .tif except by writing over a previous version of the file. Otherwise, I can only save in .xcf .
RawTherapee: This often dos not save. The screen does not freeze, but after one attempt at saving, the 'Save' button remains greyed out.
Luminance: Occasionally, the programme shuts itself down whilst saving.
Does anyone with experience of any of these programs, and who has more exprieance of Mageia 2 than I (about a month!), have any ideas on these problems? I would be grateful for any help. I should also say that the Save problems have not occurred in other kinds of programs.
Ray.
I am running Mageia 2 on an Asus X59GL which has an nVidia graphics card. In order to install the distro successfully, I had to disable noapic because of BIOS problems. However, this may be causing various problems with graphics programs:
GIMP: There are two problems here:
1. The FX filters are completely missing, as is the Deconvolution filter under 'Filters - Enhance'.
2. More seriously, the 'Save' screen often freezes, and I cannot save to .tif except by writing over a previous version of the file. Otherwise, I can only save in .xcf .
RawTherapee: This often dos not save. The screen does not freeze, but after one attempt at saving, the 'Save' button remains greyed out.
Luminance: Occasionally, the programme shuts itself down whilst saving.
Does anyone with experience of any of these programs, and who has more exprieance of Mageia 2 than I (about a month!), have any ideas on these problems? I would be grateful for any help. I should also say that the Save problems have not occurred in other kinds of programs.
Ray.