In another thread the other day, my brother's i5150 was having speed problems.  I cleaned out the dust, upgraded the BIOS from A03 to A34, and installed that speedswitch program, and now it seems to be running much better.

But... now the battery light (rightmost of the 3 on the front) isn't turning on at all.  On battery power, the manual says it should be off when the batteries are adequately charged, but the light should be on (solid) when the laptop is plugged in.  Previously, that light was lit even when the laptop was off (but still plugged in).  Now the computer still recognizes that it's plugged in, but the light never seems to come on.

Any idea what's going on or if it's going to be a problem?