Not recognizing larger partition

[Armel Peel]

I used parted to resize my primary linux partition (ext3) from 5 gigs to
10gigs.  I had to delete my extended partition, resize the partition to
10 gigs, then recreate everything behind it.  Everything went off
successfully, the only problem is linux doesnt recognize the changes.  I
rebooted in windows and even windows (partition magic) see's the
partition being 10 gigs now.  Also, parted and fdisk recognizes the
changes.  Its just that I cant use the extra space because linux still
thinks the partition is only 5 gigs.  How do I fix this?  Below is the
output from parted /dev/hdb print,  I also included the output from df. 
I've rebooted several times since the change, I kinda need the space now
so I can upgrade to redhat 7.3  :)

Running redhat 7.2 on a dual celeron 533 bp6 w/ 224 megs ram, voodoo5. 
Drive is a maxtor 20gig.

All help greatly appreciated...

address@hidden ~]$ parted /dev/hdb print
Disk geometry for /dev/hdb: 0.000-19541.320 megabytes
Disk label type: msdos
Minor    Start       End     Type      Filesystem  Flags
1          0.031  10001.403  primary   ext3        boot
2      10001.404  19539.997  extended              lba
5      10001.435  10503.435  logical   linux-swap  
6      10503.466  19539.997  logical   ext2 

address@hidden ~]$ df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/hdb1              5044156   4515264    272660  95% /
none                    111440         0    111440   0% /dev/shm
/dev/hda1              3166600   2666524    500076  85% /mnt/win9x
/dev/hda6             23025904  22286912    738992  97% /mnt/games