Intel wireless 3945ABG speeds crawling after 17.1 upgrade

[laffifan]

upgraded from Mint 13 32bit to Mint Xfce 17.1 32bit and my wifi speeds are barely breaking 5Mb/s up and down. When laptop had Mint 13 installed speeds always hit 50Mb/s. Any help or suggestions would be appreciated. Thanks.

System: Host: Latitude-D530 Kernel: 3.13.0-51-generic i686 (32 bit, gcc: 4.8.2)
Desktop: Xfce 4.11.8 (Gtk 2.24.23) Distro: Linux Mint 17.1 Rebecca
Machine: System: Dell (portable) product: Latitude D530
Mobo: Dell model: 0HP728 Bios: Dell version: A05 date: 04/03/2008
CPU: Dual core Intel Core2 Duo CPU T7250 (-MCP-) cache: 2048 KB flags: (lm nx sse sse2 sse3 ssse3 vmx) bmips: 7979.56
Clock Speeds: 1: 1200.00 MHz 2: 800.00 MHz
Graphics: Card: Intel Mobile GM965/GL960 Integrated Graphics Controller (primary) bus-ID: 00:02.0
X.Org: 1.15.1 drivers: intel (unloaded: fbdev,vesa) Resolution: 1024x768@60.0hz
GLX Renderer: Mesa DRI Intel 965GM x86/MMX/SSE2 GLX Version: 2.1 Mesa 10.1.3 Direct Rendering: Yes
Audio: Card: Intel 82801H (ICH8 Family) HD Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture ver: k3.13.0-51-generic
Network: Card-1: Broadcom NetXtreme BCM5755M Gigabit Ethernet PCI Express driver: tg3 ver: 3.134 bus-ID: 09:00.0
IF: eth0 state: down mac: <filter>
Card-2: Intel PRO/Wireless 3945ABG [Golan] Network Connection driver: iwl3945 ver: in-tree:s bus-ID: 0c:00.0
IF: wlan0 state: up mac: <filter>
Drives: HDD Total Size: 80.0GB (8.2% used) 1: id: /dev/sda model: WDC_WD800BEVS size: 80.0GB
Partition: ID: / size: 73G used: 6.1G (9%) fs: ext4 ID: /boot size: 236M used: 81M (37%) fs: ext2
ID: swap-1 size: 1.07GB used: 0.00GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: System Temperatures: cpu: 52.5C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 163 Uptime: 58 min Memory: 218.1/992.7MB Runlevel: 2 Gcc sys: 4.8.2 Client: Shell inxi: 1.8.4

Latitude-D530 ~ $ sudo rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
ifconfig:
wlan0 Link encap:Ethernet HWaddr 00:1f:3c:69:f6:a5
inet addr:192.168.1.87 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21f:3cff:fe69:f6a5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:43331 errors:0 dropped:0 overruns:0 frame:0
TX packets:13062 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32909291 (32.9 MB) TX bytes:1429814 (1.4 MB)
iwconfig:
wlan0 IEEE 802.11abg ESSID:"ASUS1"
Mode:Managed Frequency:2.462 GHz Access Point: BC:EE:7B:97:DB:1B
Bit Rate=54 Mb/s Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=50/70 Signal level=-60 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:191 Missed beacon:0