I am currently using photoshop cs2 and have been for a few months.  recently(as in the last month or so) whenever I run photoshop it freezes up my system.  I go into taskmanager and I can see that it is using 100% of my cpu and is bogging everything down till I cant work with it at all.  It didn't used to do this.  I know you all will want to know the specs of my system so here goes.  I am running a amd athilon 64 fx chip running at 2.8.  I have thought about overclocking it but to date have not done so.  I also have 1 tarabyte of hard drive space and 2gb of ram.  I have a beafy system and I  haven't talked about my graphics engine either.

I don't know what could have happned to make photoshop do this.  I have even went into preferences and changed the available ram to max and went into task manager properties and changed it's priority to low.  No matter what I can do it is still freezing me up to the point I cant even work with photoshop anymore. everything runs so slow and the filters and states take so long to take effect that I get frustrated and just kill it.

has anyone else ever dealt with this and if so how did you fix it?  I am planning an uninstall and reinstall but if I can avoid doing that I would love it.  Any ideas?