Your laptop has a CD-ROM drive with "tricky" DMA. Most Linux distros enable DMA as default for CDs - and that is causing the problem (hence DMA "timeout" errors".
Install with Debian requires selecting the gui install at boot - then at the first window CTRL+ALT+F4 to get the terminal that shows the install process (vt4) - you should see no CD errors there yet... ALT+F2 then hit enter to get a terminal - "cd /proc/ide/hdc" (for the solo 5150) - "cat settings" should show Using DMA as "1".... meaning enabled. "echo -n "using_dma:0" > settings".
Now "cat settings" should show as follows...
gateway:/proc/ide/hdc# cat settings
name value min max mode
---- ----- --- --- ----
current_speed 33 0 70 rw
dsc_overlap 0 0 1 rw
init_speed 33 0 70 rw
io_32bit 0 0 3 rw
keepsettings 0 0 1 rw
nice1 1 0 1 rw
number 2 0 3 rw
pio_mode write-only 0 255 w
unmaskirq 0 0 1 rw
using_dma 0 0 1 rw
gateway:/proc/ide/hdc#
When the install gets to the "find cd"/"load components from cd" it will NOT fail

. After the install is completed add the apropriate entry to HAL (if you install it) so that DMA is disabled on the cd from boot. Or "hdparm -d0 /dev/hdc".
NOTE: I haven't installed Ubuntu to this machine... mine has only 128M RAM so KDE (or gNOme) would be too slow. XFCE works fine for me.
Now if I could just turn off shadowing and get my IRDa working in FIR mode...